Finding the Third Proportional to 564 and 638
Calculator
Solution
The third proportional to 564 and 638 is: 721.71
Step by Step Solution
- Step 1: Write the proportion equation
564 : 638 = 638 : x - Step 2: Convert to fraction form
564/638 = 638/x - Step 3: Cross multiply
564x = 638 × 638 - Step 4: Simplify right side
564x = 407,044 - Step 5: Solve for x
x = 407,044/564 - Step 6: Final answer
x = 721.71
Related Problems
Find third proportional to 282 and 319
Half scale
Find third proportional to 1,128 and 1,276
Double scale
Find third proportional to 566 and 640
Similar ratio
Find third proportional to 846 and 957
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.