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Finding the Fourth Proportional to 844.55, 1,267.02 and 267.42

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Solution

The fourth proportional to 844.55, 1,267.02 and 267.42 is: 401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.55 : 1,267.02 = 267.42 : x
  2. Step 2: Convert to fraction form
    844.55/1,267.02 = 267.42/x
  3. Step 3: Cross multiply
    844.55x = 1,267.02 × 267.42
  4. Step 4: Simplify right side
    844.55x = 338,830.66
  5. Step 5: Solve for x
    x = 338,830.66/844.55
  6. Step 6: Final answer
    x = 401.20

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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.