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Finding the Fourth Proportional to 481.32, 721.80 and 404.82

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Solution

The fourth proportional to 481.32, 721.80 and 404.82 is: 607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.32 : 721.80 = 404.82 : x
  2. Step 2: Convert to fraction form
    481.32/721.80 = 404.82/x
  3. Step 3: Cross multiply
    481.32x = 721.80 × 404.82
  4. Step 4: Simplify right side
    481.32x = 292,199.08
  5. Step 5: Solve for x
    x = 292,199.08/481.32
  6. Step 6: Final answer
    x = 607.08

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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.