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Finding the Fourth Proportional to 616.78, 925.17 and 251.74

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Solution

The fourth proportional to 616.78, 925.17 and 251.74 is: 377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.78 : 925.17 = 251.74 : x
  2. Step 2: Convert to fraction form
    616.78/925.17 = 251.74/x
  3. Step 3: Cross multiply
    616.78x = 925.17 × 251.74
  4. Step 4: Simplify right side
    616.78x = 232,902.30
  5. Step 5: Solve for x
    x = 232,902.30/616.78
  6. Step 6: Final answer
    x = 377.61

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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.