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Finding the Fourth Proportional to 178.96, 267.20 and 161.96

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Solution

The fourth proportional to 178.96, 267.20 and 161.96 is: 241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.96 : 267.20 = 161.96 : x
  2. Step 2: Convert to fraction form
    178.96/267.20 = 161.96/x
  3. Step 3: Cross multiply
    178.96x = 267.20 × 161.96
  4. Step 4: Simplify right side
    178.96x = 43,275.71
  5. Step 5: Solve for x
    x = 43,275.71/178.96
  6. Step 6: Final answer
    x = 241.82

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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.