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Finding the Fourth Proportional to 530.38, 731.92 and 297.58

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Solution

The fourth proportional to 530.38, 731.92 and 297.58 is: 410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.38 : 731.92 = 297.58 : x
  2. Step 2: Convert to fraction form
    530.38/731.92 = 297.58/x
  3. Step 3: Cross multiply
    530.38x = 731.92 × 297.58
  4. Step 4: Simplify right side
    530.38x = 217,801.09
  5. Step 5: Solve for x
    x = 217,801.09/530.38
  6. Step 6: Final answer
    x = 410.65

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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.