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Finding the Fourth Proportional to 169.80, 254.61 and 157.44

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Solution

The fourth proportional to 169.80, 254.61 and 157.44 is: 236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.80 : 254.61 = 157.44 : x
  2. Step 2: Convert to fraction form
    169.80/254.61 = 157.44/x
  3. Step 3: Cross multiply
    169.80x = 254.61 × 157.44
  4. Step 4: Simplify right side
    169.80x = 40,086.75
  5. Step 5: Solve for x
    x = 40,086.75/169.80
  6. Step 6: Final answer
    x = 236.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.