Finding the Third Proportional to 394 and 502
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Solution
The third proportional to 394 and 502 is: 639.60
Step by Step Solution
- Step 1: Write the proportion equation
394 : 502 = 502 : x - Step 2: Convert to fraction form
394/502 = 502/x - Step 3: Cross multiply
394x = 502 × 502 - Step 4: Simplify right side
394x = 252,004 - Step 5: Solve for x
x = 252,004/394 - Step 6: Final answer
x = 639.60
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These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.