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Finding the Fourth Proportional to 517.76, 714.79 and 349.83

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Solution

The fourth proportional to 517.76, 714.79 and 349.83 is: 482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.76 : 714.79 = 349.83 : x
  2. Step 2: Convert to fraction form
    517.76/714.79 = 349.83/x
  3. Step 3: Cross multiply
    517.76x = 714.79 × 349.83
  4. Step 4: Simplify right side
    517.76x = 250,058.32
  5. Step 5: Solve for x
    x = 250,058.32/517.76
  6. Step 6: Final answer
    x = 482.96

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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.