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Finding the Fourth Proportional to 576.23, 863.91 and 267.90

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Solution

The fourth proportional to 576.23, 863.91 and 267.90 is: 401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.23 : 863.91 = 267.90 : x
  2. Step 2: Convert to fraction form
    576.23/863.91 = 267.90/x
  3. Step 3: Cross multiply
    576.23x = 863.91 × 267.90
  4. Step 4: Simplify right side
    576.23x = 231,435.83
  5. Step 5: Solve for x
    x = 231,435.83/576.23
  6. Step 6: Final answer
    x = 401.64

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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.