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Finding the Fourth Proportional to 517.43, 714.18 and 351.71

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Solution

The fourth proportional to 517.43, 714.18 and 351.71 is: 485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.43 : 714.18 = 351.71 : x
  2. Step 2: Convert to fraction form
    517.43/714.18 = 351.71/x
  3. Step 3: Cross multiply
    517.43x = 714.18 × 351.71
  4. Step 4: Simplify right side
    517.43x = 251,182.49
  5. Step 5: Solve for x
    x = 251,182.49/517.43
  6. Step 6: Final answer
    x = 485.44

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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.