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Finding the Fourth Proportional to 327.26, 490.68 and 134.90

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Solution

The fourth proportional to 327.26, 490.68 and 134.90 is: 202.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.26 : 490.68 = 134.90 : x
  2. Step 2: Convert to fraction form
    327.26/490.68 = 134.90/x
  3. Step 3: Cross multiply
    327.26x = 490.68 × 134.90
  4. Step 4: Simplify right side
    327.26x = 66,192.73
  5. Step 5: Solve for x
    x = 66,192.73/327.26
  6. Step 6: Final answer
    x = 202.26

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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.