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Finding the Fourth Proportional to 169.80, 234.28 and 110.80

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Solution

The fourth proportional to 169.80, 234.28 and 110.80 is: 152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.80 : 234.28 = 110.80 : x
  2. Step 2: Convert to fraction form
    169.80/234.28 = 110.80/x
  3. Step 3: Cross multiply
    169.80x = 234.28 × 110.80
  4. Step 4: Simplify right side
    169.80x = 25,958.22
  5. Step 5: Solve for x
    x = 25,958.22/169.80
  6. Step 6: Final answer
    x = 152.88

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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.