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Finding the Fourth Proportional to 169.86, 234.42 and 158.88

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Solution

The fourth proportional to 169.86, 234.42 and 158.88 is: 219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.86 : 234.42 = 158.88 : x
  2. Step 2: Convert to fraction form
    169.86/234.42 = 158.88/x
  3. Step 3: Cross multiply
    169.86x = 234.42 × 158.88
  4. Step 4: Simplify right side
    169.86x = 37,244.65
  5. Step 5: Solve for x
    x = 37,244.65/169.86
  6. Step 6: Final answer
    x = 219.27

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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.