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Finding the Fourth Proportional to 269.92, 372 and 196.12

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Solution

The fourth proportional to 269.92, 372 and 196.12 is: 270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.92 : 372 = 196.12 : x
  2. Step 2: Convert to fraction form
    269.92/372 = 196.12/x
  3. Step 3: Cross multiply
    269.92x = 372 × 196.12
  4. Step 4: Simplify right side
    269.92x = 72,956.64
  5. Step 5: Solve for x
    x = 72,956.64/269.92
  6. Step 6: Final answer
    x = 270.29

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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.