Finding the Third Proportional to 638 and 695
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Solution
The third proportional to 638 and 695 is: 757.09
Step by Step Solution
- Step 1: Write the proportion equation
638 : 695 = 695 : x - Step 2: Convert to fraction form
638/695 = 695/x - Step 3: Cross multiply
638x = 695 × 695 - Step 4: Simplify right side
638x = 483,025 - Step 5: Solve for x
x = 483,025/638 - Step 6: Final answer
x = 757.09
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Why These Related Problems?
These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.