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Finding the Fourth Proportional to 441.17, 661.42 and 267.87

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Solution

The fourth proportional to 441.17, 661.42 and 267.87 is: 401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.17 : 661.42 = 267.87 : x
  2. Step 2: Convert to fraction form
    441.17/661.42 = 267.87/x
  3. Step 3: Cross multiply
    441.17x = 661.42 × 267.87
  4. Step 4: Simplify right side
    441.17x = 177,174.58
  5. Step 5: Solve for x
    x = 177,174.58/441.17
  6. Step 6: Final answer
    x = 401.60

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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.