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Finding the Fourth Proportional to 576.50, 865.11 and 234.50

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Solution

The fourth proportional to 576.50, 865.11 and 234.50 is: 351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.50 : 865.11 = 234.50 : x
  2. Step 2: Convert to fraction form
    576.50/865.11 = 234.50/x
  3. Step 3: Cross multiply
    576.50x = 865.11 × 234.50
  4. Step 4: Simplify right side
    576.50x = 202,868.30
  5. Step 5: Solve for x
    x = 202,868.30/576.50
  6. Step 6: Final answer
    x = 351.90

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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.