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Finding the Fourth Proportional to 481.52, 721.80 and 308.29

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Solution

The fourth proportional to 481.52, 721.80 and 308.29 is: 462.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.52 : 721.80 = 308.29 : x
  2. Step 2: Convert to fraction form
    481.52/721.80 = 308.29/x
  3. Step 3: Cross multiply
    481.52x = 721.80 × 308.29
  4. Step 4: Simplify right side
    481.52x = 222,520.11
  5. Step 5: Solve for x
    x = 222,520.11/481.52
  6. Step 6: Final answer
    x = 462.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.