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Finding the Fourth Proportional to 327.71, 490.91 and 154.14

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Solution

The fourth proportional to 327.71, 490.91 and 154.14 is: 230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.71 : 490.91 = 154.14 : x
  2. Step 2: Convert to fraction form
    327.71/490.91 = 154.14/x
  3. Step 3: Cross multiply
    327.71x = 490.91 × 154.14
  4. Step 4: Simplify right side
    327.71x = 75,666.26
  5. Step 5: Solve for x
    x = 75,666.26/327.71
  6. Step 6: Final answer
    x = 230.89

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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.