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Finding the Fourth Proportional to 481.38, 721.23 and 237.30

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Solution

The fourth proportional to 481.38, 721.23 and 237.30 is: 355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.38 : 721.23 = 237.30 : x
  2. Step 2: Convert to fraction form
    481.38/721.23 = 237.30/x
  3. Step 3: Cross multiply
    481.38x = 721.23 × 237.30
  4. Step 4: Simplify right side
    481.38x = 171,147.88
  5. Step 5: Solve for x
    x = 171,147.88/481.38
  6. Step 6: Final answer
    x = 355.54

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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.