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Finding the Fourth Proportional to 576.43, 864.46 and 229.67

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Solution

The fourth proportional to 576.43, 864.46 and 229.67 is: 344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.43 : 864.46 = 229.67 : x
  2. Step 2: Convert to fraction form
    576.43/864.46 = 229.67/x
  3. Step 3: Cross multiply
    576.43x = 864.46 × 229.67
  4. Step 4: Simplify right side
    576.43x = 198,540.53
  5. Step 5: Solve for x
    x = 198,540.53/576.43
  6. Step 6: Final answer
    x = 344.43

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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.