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Finding the Fourth Proportional to 169.97, 234.33 and 142.29

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Solution

The fourth proportional to 169.97, 234.33 and 142.29 is: 196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.97 : 234.33 = 142.29 : x
  2. Step 2: Convert to fraction form
    169.97/234.33 = 142.29/x
  3. Step 3: Cross multiply
    169.97x = 234.33 × 142.29
  4. Step 4: Simplify right side
    169.97x = 33,342.28
  5. Step 5: Solve for x
    x = 33,342.28/169.97
  6. Step 6: Final answer
    x = 196.17

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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.