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Finding the Fourth Proportional to 577.10, 863.85 and 559.10

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Solution

The fourth proportional to 577.10, 863.85 and 559.10 is: 836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.10 : 863.85 = 559.10 : x
  2. Step 2: Convert to fraction form
    577.10/863.85 = 559.10/x
  3. Step 3: Cross multiply
    577.10x = 863.85 × 559.10
  4. Step 4: Simplify right side
    577.10x = 482,978.54
  5. Step 5: Solve for x
    x = 482,978.54/577.10
  6. Step 6: Final answer
    x = 836.91

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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.