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Finding the Fourth Proportional to 576.10, 862.09 and 461.28

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Solution

The fourth proportional to 576.10, 862.09 and 461.28 is: 690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.10 : 862.09 = 461.28 : x
  2. Step 2: Convert to fraction form
    576.10/862.09 = 461.28/x
  3. Step 3: Cross multiply
    576.10x = 862.09 × 461.28
  4. Step 4: Simplify right side
    576.10x = 397,664.88
  5. Step 5: Solve for x
    x = 397,664.88/576.10
  6. Step 6: Final answer
    x = 690.27

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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.