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Finding the Fourth Proportional to 1,863.14, 2,793.98 and 767.22

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Solution

The fourth proportional to 1,863.14, 2,793.98 and 767.22 is: 1,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.14 : 2,793.98 = 767.22 : x
  2. Step 2: Convert to fraction form
    1,863.14/2,793.98 = 767.22/x
  3. Step 3: Cross multiply
    1,863.14x = 2,793.98 × 767.22
  4. Step 4: Simplify right side
    1,863.14x = 2,143,597.34
  5. Step 5: Solve for x
    x = 2,143,597.34/1,863.14
  6. Step 6: Final answer
    x = 1,150.53

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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.