Finding the Third Proportional to 686 and 801
Calculator
Solution
The third proportional to 686 and 801 is: 935.28
Step by Step Solution
- Step 1: Write the proportion equation
686 : 801 = 801 : x - Step 2: Convert to fraction form
686/801 = 801/x - Step 3: Cross multiply
686x = 801 × 801 - Step 4: Simplify right side
686x = 641,601 - Step 5: Solve for x
x = 641,601/686 - Step 6: Final answer
x = 935.28
Related Problems
Find third proportional to 343 and 400.50
Half scale
Find third proportional to 1,372 and 1,602
Double scale
Find third proportional to 688 and 803
Similar ratio
Find third proportional to 1,029 and 1,201.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.