Finding the Third Proportional to 64.75 and 155
Calculator
Solution
The third proportional to 64.75 and 155 is: 371.04
Step by Step Solution
- Step 1: Write the proportion equation
64.75 : 155 = 155 : x - Step 2: Convert to fraction form
64.75/155 = 155/x - Step 3: Cross multiply
64.75x = 155 × 155 - Step 4: Simplify right side
64.75x = 24,025 - Step 5: Solve for x
x = 24,025/64.75 - Step 6: Final answer
x = 371.04
Related Problems
Find third proportional to 32.38 and 77.50
Half scale
Find third proportional to 129.50 and 310
Double scale
Find third proportional to 67 and 160
Similar ratio
Find third proportional to 97.13 and 232.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.