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Finding the Fourth Proportional to 481.17, 721.28 and 308.03

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Solution

The fourth proportional to 481.17, 721.28 and 308.03 is: 461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.17 : 721.28 = 308.03 : x
  2. Step 2: Convert to fraction form
    481.17/721.28 = 308.03/x
  3. Step 3: Cross multiply
    481.17x = 721.28 × 308.03
  4. Step 4: Simplify right side
    481.17x = 222,170.73
  5. Step 5: Solve for x
    x = 222,170.73/481.17
  6. Step 6: Final answer
    x = 461.73

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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.