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Finding the Fourth Proportional to 2,766.60, 4,150.44 and 818.82

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Solution

The fourth proportional to 2,766.60, 4,150.44 and 818.82 is: 1,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.60 : 4,150.44 = 818.82 : x
  2. Step 2: Convert to fraction form
    2,766.60/4,150.44 = 818.82/x
  3. Step 3: Cross multiply
    2,766.60x = 4,150.44 × 818.82
  4. Step 4: Simplify right side
    2,766.60x = 3,398,463.28
  5. Step 5: Solve for x
    x = 3,398,463.28/2,766.60
  6. Step 6: Final answer
    x = 1,228.39

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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.