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Finding the Fourth Proportional to 481.59, 721.85 and 238.29

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Solution

The fourth proportional to 481.59, 721.85 and 238.29 is: 357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.59 : 721.85 = 238.29 : x
  2. Step 2: Convert to fraction form
    481.59/721.85 = 238.29/x
  3. Step 3: Cross multiply
    481.59x = 721.85 × 238.29
  4. Step 4: Simplify right side
    481.59x = 172,009.64
  5. Step 5: Solve for x
    x = 172,009.64/481.59
  6. Step 6: Final answer
    x = 357.17

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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.