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Finding the Fourth Proportional to 267.75, 401.96 and 216.99

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Solution

The fourth proportional to 267.75, 401.96 and 216.99 is: 325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.75 : 401.96 = 216.99 : x
  2. Step 2: Convert to fraction form
    267.75/401.96 = 216.99/x
  3. Step 3: Cross multiply
    267.75x = 401.96 × 216.99
  4. Step 4: Simplify right side
    267.75x = 87,221.30
  5. Step 5: Solve for x
    x = 87,221.30/267.75
  6. Step 6: Final answer
    x = 325.76

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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.