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Finding the Fourth Proportional to 179.76, 268.02 and 169.20

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Solution

The fourth proportional to 179.76, 268.02 and 169.20 is: 252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.76 : 268.02 = 169.20 : x
  2. Step 2: Convert to fraction form
    179.76/268.02 = 169.20/x
  3. Step 3: Cross multiply
    179.76x = 268.02 × 169.20
  4. Step 4: Simplify right side
    179.76x = 45,348.98
  5. Step 5: Solve for x
    x = 45,348.98/179.76
  6. Step 6: Final answer
    x = 252.28

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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.