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Finding the Third Proportional to 252.38 and 401.13

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Solution

The third proportional to 252.38 and 401.13 is: 637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.38 : 401.13 = 401.13 : x
  2. Step 2: Convert to fraction form
    252.38/401.13 = 401.13/x
  3. Step 3: Cross multiply
    252.38x = 401.13 × 401.13
  4. Step 4: Simplify right side
    252.38x = 160,901.27
  5. Step 5: Solve for x
    x = 160,901.27/252.38
  6. Step 6: Final answer
    x = 637.55

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.