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Finding the Fourth Proportional to 844.56, 1,263.87 and 787.86

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Solution

The fourth proportional to 844.56, 1,263.87 and 787.86 is: 1,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.56 : 1,263.87 = 787.86 : x
  2. Step 2: Convert to fraction form
    844.56/1,263.87 = 787.86/x
  3. Step 3: Cross multiply
    844.56x = 1,263.87 × 787.86
  4. Step 4: Simplify right side
    844.56x = 995,752.62
  5. Step 5: Solve for x
    x = 995,752.62/844.56
  6. Step 6: Final answer
    x = 1,179.02

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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.