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Finding the Fourth Proportional to 169.80, 234.96 and 144.86

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Solution

The fourth proportional to 169.80, 234.96 and 144.86 is: 200.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.80 : 234.96 = 144.86 : x
  2. Step 2: Convert to fraction form
    169.80/234.96 = 144.86/x
  3. Step 3: Cross multiply
    169.80x = 234.96 × 144.86
  4. Step 4: Simplify right side
    169.80x = 34,036.89
  5. Step 5: Solve for x
    x = 34,036.89/169.80
  6. Step 6: Final answer
    x = 200.46

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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.