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Finding the Fourth Proportional to 481.27, 664.12 and 284.74

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Solution

The fourth proportional to 481.27, 664.12 and 284.74 is: 392.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.27 : 664.12 = 284.74 : x
  2. Step 2: Convert to fraction form
    481.27/664.12 = 284.74/x
  3. Step 3: Cross multiply
    481.27x = 664.12 × 284.74
  4. Step 4: Simplify right side
    481.27x = 189,101.53
  5. Step 5: Solve for x
    x = 189,101.53/481.27
  6. Step 6: Final answer
    x = 392.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.