1. Problem Solving in Geometry with Proportions

2. Properties of Proportions

3. Property Check

4. Property Check

5. Property Check

6. Using Properties of ProportionsM 6 13 N 15 Q L 5 P

7. Using Properties of ProportionsM 6 13 N 15 Q L 5 P

8. Geometric Mean

9. How do we find x? (geometric mean)

10. What is the geometric mean of 3 and 12?

11. Find the geometric mean
8 and 18
35 and 175
36 and 128

12. Example
You are building a scale model of your uncle’s fishing boat. The boat is 62 ft long and 23 ft wide. The model will be 14 in. long. How wide should it be.