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Finding the Fourth Proportional to 217.99, 327.04 and 63.91

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Solution

The fourth proportional to 217.99, 327.04 and 63.91 is: 95.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.99 : 327.04 = 63.91 : x
  2. Step 2: Convert to fraction form
    217.99/327.04 = 63.91/x
  3. Step 3: Cross multiply
    217.99x = 327.04 × 63.91
  4. Step 4: Simplify right side
    217.99x = 20,901.73
  5. Step 5: Solve for x
    x = 20,901.73/217.99
  6. Step 6: Final answer
    x = 95.88

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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.