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Finding the Fourth Proportional to 169.68, 254.33 and 118.43

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Solution

The fourth proportional to 169.68, 254.33 and 118.43 is: 177.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.68 : 254.33 = 118.43 : x
  2. Step 2: Convert to fraction form
    169.68/254.33 = 118.43/x
  3. Step 3: Cross multiply
    169.68x = 254.33 × 118.43
  4. Step 4: Simplify right side
    169.68x = 30,118.44
  5. Step 5: Solve for x
    x = 30,118.44/169.68
  6. Step 6: Final answer
    x = 177.50

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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.