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Finding the Fourth Proportional to 576.72, 863.02 and 499.94

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Solution

The fourth proportional to 576.72, 863.02 and 499.94 is: 748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.72 : 863.02 = 499.94 : x
  2. Step 2: Convert to fraction form
    576.72/863.02 = 499.94/x
  3. Step 3: Cross multiply
    576.72x = 863.02 × 499.94
  4. Step 4: Simplify right side
    576.72x = 431,458.22
  5. Step 5: Solve for x
    x = 431,458.22/576.72
  6. Step 6: Final answer
    x = 748.12

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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.