Quiz about Proportions

Question 1

Solve the proportion.

$$\frac{5}{7}=\frac{x}{84}$$

Accepted Answer

60

Answer

320

Answer

117.6

Answer

82

Question 2

Is the following a proportion? $$\frac{2}{5}=\frac{9}{22.5}$$

Accepted Answer

yes

Answer

no

Question 3

On a map, 2 1/2 inches represents 50 miles. How many inches would there be between two cities that are 2,500 miles apart?

Accepted Answer

125 inches

Answer

25 inches

Answer

500 inches

Answer

100 inches

Question 4

The model of a toy shark is 3/4 in = 8 feet. A female great white shark is 21 feet. Which proportion would determine the length of the toy?

Accepted Answer

$$\frac{x}{21}=\frac{0.75}{8}$$

Answer

$$\frac{3}{4}=\frac{8}{x}$$

Answer

$$\frac{3}{4}=\frac{21}{x}$$

Answer

$$\frac{0.75}{8}=\frac{21}{x}$$

Question 5

A recipe calls for 2 cups of flour for every 3 cups of sugar. Which of the following is the correct ratio of flour to sugar?

Accepted Answer

2:3

Answer

3:2

Answer

1:1.5

Answer

1.5:1

Question 6

In a survey, the ratio of people who prefer tea to those who prefer coffee is 3:2. If 120 people were surveyed, how many prefer tea?

Accepted Answer

72

Answer

48

Answer

80

Answer

90

Question 7

A bag contains red and blue marbles in the ratio 3:4. If there are 21 red marbles, how many blue marbles are there?

Accepted Answer

28

Answer

16

Answer

24

Answer

32

Question 8

A school's student to teacher ratio is 20:1. If there are 400 students, how many teachers are there?

Accepted Answer

20

Answer

10

Answer

40

Answer

80

Question 9

A 4 foot tall wolf casts a 5 foot long shadow. How long would a 6 foot man's shadow be if he is next to the wolf?

Accepted Answer

7.5 feet

Answer

5 feet

Answer

7 feet

Answer

4.8 feet

Question 10

Jouett won 4 out of 5 games. Which proportion will determine how many games they will win if they play 15 games?

Accepted Answer

$$\frac{4}{5}=\frac{x}{15}$$

Answer

$$\frac{4}{15}=\frac{5}{x}$$

Answer

$$\frac{4}{9}=\frac{x}{15}$$

Answer

$$\frac{1}{5}=\frac{x}{15}$$

Question 11

The ratio of boys to girls at a martial arts class is 5:2. If there are 35 students in class Monday night, the how many were girls?

Accepted Answer

10 girls

Answer

12 girls

Answer

14 girls

Answer

25 girls

Question 12

At Sharkade, 4 out 5 members approved the new budget. If there is 90 total members, then how many members did not approve the new budget?

Accepted Answer

18 members

Answer

10 members

Answer

40 members

Answer

72 members

Question 13

The triangles are similar, solve for the question mark.

Accepted Answer

18

Answer

8

Answer

12.5

Answer

24

Question 14

Complete each proportion.
CB / DM = AC / ?

Accepted Answer

AD

Answer

BM

Answer

MA

Answer

BC

Question 15

To measure the distance across a pond, a surveyor locates points A, B, C, D, and E as shown. What is AB to the nearest meter?

Accepted Answer

15

Answer

10

Answer

12

Answer

18

Question 16

Are the triangles similar?

Accepted Answer

Yes

Answer

No

Question 17

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

Accepted Answer

proportional, congruent

Answer

congruent, proportional

Answer

congruent, congruent

Answer

proportional, proportional

Question 18

Find missing side

Accepted Answer

7

Answer

5

Answer

9

Answer

11

Question 19

Determine if the triangles are similar. Justify.

Accepted Answer

Yes, by SAS. Scale Factor is 3:1.

Answer

Yes, by SSS.

Answer

Yes, by SAS. Scale Factor is 1:2.

Answer

No, not similar.

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