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Finding the Fourth Proportional to 179.48, 269.12 and 121.67

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Solution

The fourth proportional to 179.48, 269.12 and 121.67 is: 182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.48 : 269.12 = 121.67 : x
  2. Step 2: Convert to fraction form
    179.48/269.12 = 121.67/x
  3. Step 3: Cross multiply
    179.48x = 269.12 × 121.67
  4. Step 4: Simplify right side
    179.48x = 32,743.80
  5. Step 5: Solve for x
    x = 32,743.80/179.48
  6. Step 6: Final answer
    x = 182.43

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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.