Solve Proportions

Determine whether each pair of ratios forms a proportion

• Proportion

• Not a Proportion

About 13 out of 20 homes have a personal computer.  On a street with 60 homes, how many would you expect to have a personal computer?

• 7 homes

• 39 homes

• 73 homes 

• 40 homes

Hamburger meat sells for $6 for every 3 pounds. If Alicia buys 10 pounds of hamburger meat, how much will she pay?

• $30

• $20

• $60

• $10

Enter the missing numbers to create equivalent ratios. 
1 : 3
6 : 18
2 : _
4 : _

• 4 & 8

• 4 & 12

• 6 & 12

• 6 & 8

Solve for the unknown in the equivalent ratios.
3/4 = 9/?

• 8

• 10

• 4

• 12

Solve for A in the table.

• 40

• 10

• 9

• 45

Write the ratio as a fraction in simplest form.
15 girls to 6 boys    

• 5 to 2

• 5/3

• 3 to 5

• 5/2

Find the Unit Rate.
72 ounces for 12 servings    

• 7 ounces per serving

• 144 ounces for 24 servings

• 6 ounces per serving

• 36 ounces for 6 servings

Name the constant of proportionality.

• 20

• 40

• 16

• 35

Suppose a model of the Queen Elizabeth II is 17 inches in length. The actual length of the Queen Elizabeth II  is 1020 feet. What is the scale of the model?

• 1 ft = 60 inches

• 60 inches = 60 feet

• 1 inch = 60 feet

• 60 inches = 1020 feet