proportions, better buy, and similar figures

Solve the proportion:

3/4 = x/88

• 33

• 66

• 121

• 12

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15
• c=18
• c=21
• c=16

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

• $30
• $20
• $60
• $10

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480
• 1960
• 84
• 25

• 1
• 3

• 4
• 12

Solve the proportion:

• 4
• 8
• 14
• 10

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.