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Finding the Fourth Proportional to 517.53, 714.14 and 284.61

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Solution

The fourth proportional to 517.53, 714.14 and 284.61 is: 392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.53 : 714.14 = 284.61 : x
  2. Step 2: Convert to fraction form
    517.53/714.14 = 284.61/x
  3. Step 3: Cross multiply
    517.53x = 714.14 × 284.61
  4. Step 4: Simplify right side
    517.53x = 203,249.96
  5. Step 5: Solve for x
    x = 203,249.96/517.53
  6. Step 6: Final answer
    x = 392.73

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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.