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Finding the Fourth Proportional to 617.52, 925.12 and 411.48

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Solution

The fourth proportional to 617.52, 925.12 and 411.48 is: 616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.52 : 925.12 = 411.48 : x
  2. Step 2: Convert to fraction form
    617.52/925.12 = 411.48/x
  3. Step 3: Cross multiply
    617.52x = 925.12 × 411.48
  4. Step 4: Simplify right side
    617.52x = 380,668.38
  5. Step 5: Solve for x
    x = 380,668.38/617.52
  6. Step 6: Final answer
    x = 616.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.