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Finding the Fourth Proportional to 327.43, 451.76 and 203.09

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Solution

The fourth proportional to 327.43, 451.76 and 203.09 is: 280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.43 : 451.76 = 203.09 : x
  2. Step 2: Convert to fraction form
    327.43/451.76 = 203.09/x
  3. Step 3: Cross multiply
    327.43x = 451.76 × 203.09
  4. Step 4: Simplify right side
    327.43x = 91,748.05
  5. Step 5: Solve for x
    x = 91,748.05/327.43
  6. Step 6: Final answer
    x = 280.21

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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.