Solving Proportions with Scale Factor

Solve the proportion below:

• 3
• 24
• 21
• 12

Solve the proportion below:

• 42
• 6
• 2
• 28

Solve the proportion below:

• 418
• 2
• 38
• 11

The pet store has 18 dogs toys for sale. 10 toys are frisbees and the rest are bones. What is the ratio of bones to frisbees in simplest form?

• 5/9
• 8/10
• 4/5
• 18/10

The class has 12 girls and 16 boys. What is the ratio of total students to boys? (simplest form)

• 28/16
• 7/4
• 16/28
• 12/16

To find the height of a very tall pine tree, you measure your shadow and the tree's shadow.  How tall is the tree?

• 144 feet
• 72 feet
• 36 feet

Find missing side

• 5
• 7
• 9
• 11

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75
• 9.75
• 10
• 12

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

I paid $15.00 for 6 gallons of gasoline.
What was the price PER gallon?

• $0.40
• $9.00
• $2.50
• $0.90