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Finding the Fourth Proportional to 1,463.87, 2,195.01 and 768.83

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Solution

The fourth proportional to 1,463.87, 2,195.01 and 768.83 is: 1,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,463.87 : 2,195.01 = 768.83 : x
  2. Step 2: Convert to fraction form
    1,463.87/2,195.01 = 768.83/x
  3. Step 3: Cross multiply
    1,463.87x = 2,195.01 × 768.83
  4. Step 4: Simplify right side
    1,463.87x = 1,687,589.54
  5. Step 5: Solve for x
    x = 1,687,589.54/1,463.87
  6. Step 6: Final answer
    x = 1,152.83

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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.