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Finding the Fourth Proportional to 481.44, 724.80 and 354.24

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Solution

The fourth proportional to 481.44, 724.80 and 354.24 is: 533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.44 : 724.80 = 354.24 : x
  2. Step 2: Convert to fraction form
    481.44/724.80 = 354.24/x
  3. Step 3: Cross multiply
    481.44x = 724.80 × 354.24
  4. Step 4: Simplify right side
    481.44x = 256,753.15
  5. Step 5: Solve for x
    x = 256,753.15/481.44
  6. Step 6: Final answer
    x = 533.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.