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Finding the Third Proportional to 251.13 and 404.88

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Solution

The third proportional to 251.13 and 404.88 is: 652.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.13 : 404.88 = 404.88 : x
  2. Step 2: Convert to fraction form
    251.13/404.88 = 404.88/x
  3. Step 3: Cross multiply
    251.13x = 404.88 × 404.88
  4. Step 4: Simplify right side
    251.13x = 163,923.77
  5. Step 5: Solve for x
    x = 163,923.77/251.13
  6. Step 6: Final answer
    x = 652.76

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.