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Finding the Fourth Proportional to 327.28, 451.76 and 210.88

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Solution

The fourth proportional to 327.28, 451.76 and 210.88 is: 291.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.28 : 451.76 = 210.88 : x
  2. Step 2: Convert to fraction form
    327.28/451.76 = 210.88/x
  3. Step 3: Cross multiply
    327.28x = 451.76 × 210.88
  4. Step 4: Simplify right side
    327.28x = 95,267.15
  5. Step 5: Solve for x
    x = 95,267.15/327.28
  6. Step 6: Final answer
    x = 291.09

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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.