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Finding the Fourth Proportional to 169.92, 234.26 and 140.30

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Solution

The fourth proportional to 169.92, 234.26 and 140.30 is: 193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.92 : 234.26 = 140.30 : x
  2. Step 2: Convert to fraction form
    169.92/234.26 = 140.30/x
  3. Step 3: Cross multiply
    169.92x = 234.26 × 140.30
  4. Step 4: Simplify right side
    169.92x = 32,866.68
  5. Step 5: Solve for x
    x = 32,866.68/169.92
  6. Step 6: Final answer
    x = 193.42

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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.