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Finding the Fourth Proportional to 517.52, 714.60 and 402.32

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Solution

The fourth proportional to 517.52, 714.60 and 402.32 is: 555.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.52 : 714.60 = 402.32 : x
  2. Step 2: Convert to fraction form
    517.52/714.60 = 402.32/x
  3. Step 3: Cross multiply
    517.52x = 714.60 × 402.32
  4. Step 4: Simplify right side
    517.52x = 287,497.87
  5. Step 5: Solve for x
    x = 287,497.87/517.52
  6. Step 6: Final answer
    x = 555.53

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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.