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Finding the Fourth Proportional to 169.83, 254.61 and 118.53

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Solution

The fourth proportional to 169.83, 254.61 and 118.53 is: 177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.83 : 254.61 = 118.53 : x
  2. Step 2: Convert to fraction form
    169.83/254.61 = 118.53/x
  3. Step 3: Cross multiply
    169.83x = 254.61 × 118.53
  4. Step 4: Simplify right side
    169.83x = 30,178.92
  5. Step 5: Solve for x
    x = 30,178.92/169.83
  6. Step 6: Final answer
    x = 177.70

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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.