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Finding the Fourth Proportional to 267.96, 369.84 and 218.76

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Solution

The fourth proportional to 267.96, 369.84 and 218.76 is: 301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.96 : 369.84 = 218.76 : x
  2. Step 2: Convert to fraction form
    267.96/369.84 = 218.76/x
  3. Step 3: Cross multiply
    267.96x = 369.84 × 218.76
  4. Step 4: Simplify right side
    267.96x = 80,906.20
  5. Step 5: Solve for x
    x = 80,906.20/267.96
  6. Step 6: Final answer
    x = 301.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.