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Finding the Fourth Proportional to 530.29, 731.65 and 417.91

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Solution

The fourth proportional to 530.29, 731.65 and 417.91 is: 576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.29 : 731.65 = 417.91 : x
  2. Step 2: Convert to fraction form
    530.29/731.65 = 417.91/x
  3. Step 3: Cross multiply
    530.29x = 731.65 × 417.91
  4. Step 4: Simplify right side
    530.29x = 305,764.31
  5. Step 5: Solve for x
    x = 305,764.31/530.29
  6. Step 6: Final answer
    x = 576.60

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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.