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Finding the Fourth Proportional to 267.76, 400.96 and 186.56

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Solution

The fourth proportional to 267.76, 400.96 and 186.56 is: 279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.76 : 400.96 = 186.56 : x
  2. Step 2: Convert to fraction form
    267.76/400.96 = 186.56/x
  3. Step 3: Cross multiply
    267.76x = 400.96 × 186.56
  4. Step 4: Simplify right side
    267.76x = 74,803.10
  5. Step 5: Solve for x
    x = 74,803.10/267.76
  6. Step 6: Final answer
    x = 279.37

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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.