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Finding the Fourth Proportional to 625.68, 863.04 and 376.86

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Solution

The fourth proportional to 625.68, 863.04 and 376.86 is: 519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.68 : 863.04 = 376.86 : x
  2. Step 2: Convert to fraction form
    625.68/863.04 = 376.86/x
  3. Step 3: Cross multiply
    625.68x = 863.04 × 376.86
  4. Step 4: Simplify right side
    625.68x = 325,245.25
  5. Step 5: Solve for x
    x = 325,245.25/625.68
  6. Step 6: Final answer
    x = 519.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.