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Finding the Fourth Proportional to 462.39, 638.02 and 265.91

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Solution

The fourth proportional to 462.39, 638.02 and 265.91 is: 366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.39 : 638.02 = 265.91 : x
  2. Step 2: Convert to fraction form
    462.39/638.02 = 265.91/x
  3. Step 3: Cross multiply
    462.39x = 638.02 × 265.91
  4. Step 4: Simplify right side
    462.39x = 169,654.57
  5. Step 5: Solve for x
    x = 169,654.57/462.39
  6. Step 6: Final answer
    x = 366.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.