Page 118 - Math Course 3 (Book 2)

Properties of Proportions

4. ART An artist in Portland, Oregon, makes bronze sculptures of dogs. The ratio of the height of a sculpture to
the actual height of the dog is 2:3. If the height of the sculpture is 14 inches, find the height of the dog.

5. SCHOOL The ratio of male students to female students in the drama club at Campbell High School is 3:4. If
the number of male students in the club is 18, what is the number of female students?

Solve each proportion.

6. 2 x 7. 7 21 8. 20 4x
5 = 40 10 = x 5 = 6

9. 5x = 35 10. x + 1 = 7 11. 15 = x – 3
4 8 3 2 3 5

Find the measures of the sides of each triangle.

12. The ratio of the measures of the sides of a triangle is 3:5:7, and its perimeter is 450 centimeters.

13. The ratio of the measures of the sides of a triangle is 5:6:9, and its perimeter is 220 meters.

14. The ratio of the measures of the sides of a triangle is 4:6:8, and its perimeter is 126 feet.

15. The ratio of the measures of the sides of a triangle is 5:7:8, and its perimeter is 40 inches.

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