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Finding the Fourth Proportional to 195.38, 269.61 and 112.49

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Solution

The fourth proportional to 195.38, 269.61 and 112.49 is: 155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.38 : 269.61 = 112.49 : x
  2. Step 2: Convert to fraction form
    195.38/269.61 = 112.49/x
  3. Step 3: Cross multiply
    195.38x = 269.61 × 112.49
  4. Step 4: Simplify right side
    195.38x = 30,327.08
  5. Step 5: Solve for x
    x = 30,327.08/195.38
  6. Step 6: Final answer
    x = 155.22

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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.