Ratio Tables and Cross Products

REVIEW QUESTION
Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

• both

• neither

Solve the proportion.

• 1

• 3

• 6

• 5

Is this table proportional?

• Yes

• No

What is the missing value of the proportion shown here?

• x = 16.5

• x = 17

• x = 17.5

• x = 18

If cross products are ​ ​ (a)   , the proportion is false; if cross products are equal, the proportion is​ (b)  

• not equal

• false

• true.

• the same

• not a proportion

If the Cross Products are equal, then..................

• the two ratios are NOT proportional.

• the two ratios are proportional

Mathematical Equivalence

OFF

If a car travels 60 miles in 1.5 hours, what is the ratio of miles to hours?

• 40:1

• 60:1.5

• 40:3

• 20:0.5

In a survey, the ratio of people who prefer tea to those who prefer coffee is 4:5. If 180 people were surveyed, how many prefer tea?

• 80

• 72

• 90

• 100

If the ratio of cats to dogs in a pet store is 3:4, and there are 12 cats, how many dogs are there?

• 16

• 15

• 14

• 13