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Finding the Fourth Proportional to 267.42, 400.11 and 266.74

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Solution

The fourth proportional to 267.42, 400.11 and 266.74 is: 399.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.42 : 400.11 = 266.74 : x
  2. Step 2: Convert to fraction form
    267.42/400.11 = 266.74/x
  3. Step 3: Cross multiply
    267.42x = 400.11 × 266.74
  4. Step 4: Simplify right side
    267.42x = 106,722.01
  5. Step 5: Solve for x
    x = 106,722.01/267.42
  6. Step 6: Final answer
    x = 399.08

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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.