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Finding the Fourth Proportional to 327.43, 451.85 and 194.79

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Solution

The fourth proportional to 327.43, 451.85 and 194.79 is: 268.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.43 : 451.85 = 194.79 : x
  2. Step 2: Convert to fraction form
    327.43/451.85 = 194.79/x
  3. Step 3: Cross multiply
    327.43x = 451.85 × 194.79
  4. Step 4: Simplify right side
    327.43x = 88,017.68
  5. Step 5: Solve for x
    x = 88,017.68/327.43
  6. Step 6: Final answer
    x = 268.82

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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.