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Finding the Fourth Proportional to 449.55, 674.07 and 267.07

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Solution

The fourth proportional to 449.55, 674.07 and 267.07 is: 400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.55 : 674.07 = 267.07 : x
  2. Step 2: Convert to fraction form
    449.55/674.07 = 267.07/x
  3. Step 3: Cross multiply
    449.55x = 674.07 × 267.07
  4. Step 4: Simplify right side
    449.55x = 180,023.87
  5. Step 5: Solve for x
    x = 180,023.87/449.55
  6. Step 6: Final answer
    x = 400.45

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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.