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Finding the Fourth Proportional to 327.44, 491.19 and 132.51

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Solution

The fourth proportional to 327.44, 491.19 and 132.51 is: 198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.44 : 491.19 = 132.51 : x
  2. Step 2: Convert to fraction form
    327.44/491.19 = 132.51/x
  3. Step 3: Cross multiply
    327.44x = 491.19 × 132.51
  4. Step 4: Simplify right side
    327.44x = 65,087.59
  5. Step 5: Solve for x
    x = 65,087.59/327.44
  6. Step 6: Final answer
    x = 198.78

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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.