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Finding the Fourth Proportional to 134.40, 185.41 and 115.97

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Solution

The fourth proportional to 134.40, 185.41 and 115.97 is: 159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.40 : 185.41 = 115.97 : x
  2. Step 2: Convert to fraction form
    134.40/185.41 = 115.97/x
  3. Step 3: Cross multiply
    134.40x = 185.41 × 115.97
  4. Step 4: Simplify right side
    134.40x = 21,502.17
  5. Step 5: Solve for x
    x = 21,502.17/134.40
  6. Step 6: Final answer
    x = 159.99

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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.