Finding the Third Proportional to 624 and 685
Calculator
Solution
The third proportional to 624 and 685 is: 751.96
Step by Step Solution
- Step 1: Write the proportion equation
624 : 685 = 685 : x - Step 2: Convert to fraction form
624/685 = 685/x - Step 3: Cross multiply
624x = 685 × 685 - Step 4: Simplify right side
624x = 469,225 - Step 5: Solve for x
x = 469,225/624 - Step 6: Final answer
x = 751.96
Related Problems
Find third proportional to 312 and 342.50
Half scale
Find third proportional to 1,248 and 1,370
Double scale
Find third proportional to 626 and 687
Similar ratio
Find third proportional to 936 and 1,027.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.