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Finding the Fourth Proportional to 327.32, 451.92 and 229.20

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Solution

The fourth proportional to 327.32, 451.92 and 229.20 is: 316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.32 : 451.92 = 229.20 : x
  2. Step 2: Convert to fraction form
    327.32/451.92 = 229.20/x
  3. Step 3: Cross multiply
    327.32x = 451.92 × 229.20
  4. Step 4: Simplify right side
    327.32x = 103,580.06
  5. Step 5: Solve for x
    x = 103,580.06/327.32
  6. Step 6: Final answer
    x = 316.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.