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Finding the Fourth Proportional to 481.83, 724.13 and 320.54

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Solution

The fourth proportional to 481.83, 724.13 and 320.54 is: 481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.83 : 724.13 = 320.54 : x
  2. Step 2: Convert to fraction form
    481.83/724.13 = 320.54/x
  3. Step 3: Cross multiply
    481.83x = 724.13 × 320.54
  4. Step 4: Simplify right side
    481.83x = 232,108.61
  5. Step 5: Solve for x
    x = 232,108.61/481.83
  6. Step 6: Final answer
    x = 481.73

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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.