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Finding the Fourth Proportional to 327.68, 452.36 and 196.84

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Solution

The fourth proportional to 327.68, 452.36 and 196.84 is: 271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.68 : 452.36 = 196.84 : x
  2. Step 2: Convert to fraction form
    327.68/452.36 = 196.84/x
  3. Step 3: Cross multiply
    327.68x = 452.36 × 196.84
  4. Step 4: Simplify right side
    327.68x = 89,042.54
  5. Step 5: Solve for x
    x = 89,042.54/327.68
  6. Step 6: Final answer
    x = 271.74

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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.