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Finding the Fourth Proportional to 195.71, 270.07 and 108.38

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Solution

The fourth proportional to 195.71, 270.07 and 108.38 is: 149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.71 : 270.07 = 108.38 : x
  2. Step 2: Convert to fraction form
    195.71/270.07 = 108.38/x
  3. Step 3: Cross multiply
    195.71x = 270.07 × 108.38
  4. Step 4: Simplify right side
    195.71x = 29,268.97
  5. Step 5: Solve for x
    x = 29,268.97/195.71
  6. Step 6: Final answer
    x = 149.56

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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.