Practical Problems for Proportions

• 3.099

• 72.6

• 111

• 201.6

• 5

• 7.9

• 9.8

• 11

• 8.86

• 98

• 101

• 260

Solve the proportion:

• 4

• 8

• 14

• 10

If the ratio of boys to girls in a class is 3:4, how many boys are there if there are 20 girls?

• 15

• 25

• 10

• 30

What is the constant of proportionality?

• $3

• $4

• $2

• $9

If the ratio of cats to dogs in a pet store is 3:4, how many cats are there if there are 20 dogs?

• 15

• 25

• 30

• 10

• 4

• 6

• 8

• 10

A car travels 420 miles in 8 hours.  If the car continues at the same rate, how far will it travel in 12 hours?

• 630 miles

• 630 hours

• 600 miles

• 540 hours

Solve for x 

• x = 1/10

• x = 10

• x = 4

• x = 5