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Finding the Fourth Proportional to 169.08, 252.39 and 154.68

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Solution

The fourth proportional to 169.08, 252.39 and 154.68 is: 230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.08 : 252.39 = 154.68 : x
  2. Step 2: Convert to fraction form
    169.08/252.39 = 154.68/x
  3. Step 3: Cross multiply
    169.08x = 252.39 × 154.68
  4. Step 4: Simplify right side
    169.08x = 39,039.69
  5. Step 5: Solve for x
    x = 39,039.69/169.08
  6. Step 6: Final answer
    x = 230.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.