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Finding the Fourth Proportional to 327.24, 491.04 and 153.86

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Solution

The fourth proportional to 327.24, 491.04 and 153.86 is: 230.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.24 : 491.04 = 153.86 : x
  2. Step 2: Convert to fraction form
    327.24/491.04 = 153.86/x
  3. Step 3: Cross multiply
    327.24x = 491.04 × 153.86
  4. Step 4: Simplify right side
    327.24x = 75,551.41
  5. Step 5: Solve for x
    x = 75,551.41/327.24
  6. Step 6: Final answer
    x = 230.87

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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.