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Finding the Third Proportional to 354.38 and 538.88

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Solution

The third proportional to 354.38 and 538.88 is: 819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.38 : 538.88 = 538.88 : x
  2. Step 2: Convert to fraction form
    354.38/538.88 = 538.88/x
  3. Step 3: Cross multiply
    354.38x = 538.88 × 538.88
  4. Step 4: Simplify right side
    354.38x = 290,386.27
  5. Step 5: Solve for x
    x = 290,386.27/354.38
  6. Step 6: Final answer
    x = 819.43

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.