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Finding the Fourth Proportional to 327.96, 452.42 and 197

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Solution

The fourth proportional to 327.96, 452.42 and 197 is: 271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.96 : 452.42 = 197 : x
  2. Step 2: Convert to fraction form
    327.96/452.42 = 197/x
  3. Step 3: Cross multiply
    327.96x = 452.42 × 197
  4. Step 4: Simplify right side
    327.96x = 89,126.74
  5. Step 5: Solve for x
    x = 89,126.74/327.96
  6. Step 6: Final answer
    x = 271.76

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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.