Problem Solve with Proportions

Solve the proportion:

• n=6

• n=24

• n=7

• n=8

Which of the following does NOT represent a correct first step in solving the following proportion?

Cross Multiply/Cross Products

• 75

• 28

• 36

• 24

Solve for x

• 1/2

• 25/8

• 11

• 53/4

Cross Multiply/Cross Products

• 80

• 45

• 3

• 240

Solve for k

• 165

• 17

• 1/17

• 1/165

Are the two ratios proportional?

• YES

• NO

For the pair of similar figures, find the length of each side marked with a variable.

• 13.4 cm

• 15 cm

• 12.5 cm

• 7.2 m

A lawnmower factory can produce 12 lawnmowers in 8 hours. How many hours will it take to produce 30 lawnmowers?

Enter your answer as a number only (no units).

Solve the proportion:

• 25

• 20

• 49

• 4