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Finding the Fourth Proportional to 179.45, 268.71 and 125.38

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Solution

The fourth proportional to 179.45, 268.71 and 125.38 is: 187.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.45 : 268.71 = 125.38 : x
  2. Step 2: Convert to fraction form
    179.45/268.71 = 125.38/x
  3. Step 3: Cross multiply
    179.45x = 268.71 × 125.38
  4. Step 4: Simplify right side
    179.45x = 33,690.86
  5. Step 5: Solve for x
    x = 33,690.86/179.45
  6. Step 6: Final answer
    x = 187.75

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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.