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Finding the Fourth Proportional to 517.32, 717.12 and 484.20

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Solution

The fourth proportional to 517.32, 717.12 and 484.20 is: 671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.32 : 717.12 = 484.20 : x
  2. Step 2: Convert to fraction form
    517.32/717.12 = 484.20/x
  3. Step 3: Cross multiply
    517.32x = 717.12 × 484.20
  4. Step 4: Simplify right side
    517.32x = 347,229.50
  5. Step 5: Solve for x
    x = 347,229.50/517.32
  6. Step 6: Final answer
    x = 671.21

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.