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Finding the Fourth Proportional to 481.27, 721.91 and 134.60

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Solution

The fourth proportional to 481.27, 721.91 and 134.60 is: 201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.27 : 721.91 = 134.60 : x
  2. Step 2: Convert to fraction form
    481.27/721.91 = 134.60/x
  3. Step 3: Cross multiply
    481.27x = 721.91 × 134.60
  4. Step 4: Simplify right side
    481.27x = 97,169.09
  5. Step 5: Solve for x
    x = 97,169.09/481.27
  6. Step 6: Final answer
    x = 201.90

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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.