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Finding the Fourth Proportional to 179.79, 268.76 and 133.71

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Solution

The fourth proportional to 179.79, 268.76 and 133.71 is: 199.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.79 : 268.76 = 133.71 : x
  2. Step 2: Convert to fraction form
    179.79/268.76 = 133.71/x
  3. Step 3: Cross multiply
    179.79x = 268.76 × 133.71
  4. Step 4: Simplify right side
    179.79x = 35,935.23
  5. Step 5: Solve for x
    x = 35,935.23/179.79
  6. Step 6: Final answer
    x = 199.87

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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.