Finding the Third Proportional to 72 and 160.31
Calculator
Solution
The third proportional to 72 and 160.31 is: 356.95
Step by Step Solution
- Step 1: Write the proportion equation
72 : 160.31 = 160.31 : x - Step 2: Convert to fraction form
72/160.31 = 160.31/x - Step 3: Cross multiply
72x = 160.31 × 160.31 - Step 4: Simplify right side
72x = 25,700.10 - Step 5: Solve for x
x = 25,700.10/72 - Step 6: Final answer
x = 356.95
Related Problems
Find third proportional to 36 and 80.16
Half scale
Find third proportional to 144 and 320.63
Double scale
Find third proportional to 74 and 165
Similar ratio
Find third proportional to 108 and 240.47
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.