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Finding the Fourth Proportional to 1,350.55, 1,863.94 and 791.14

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Solution

The fourth proportional to 1,350.55, 1,863.94 and 791.14 is: 1,091.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.55 : 1,863.94 = 791.14 : x
  2. Step 2: Convert to fraction form
    1,350.55/1,863.94 = 791.14/x
  3. Step 3: Cross multiply
    1,350.55x = 1,863.94 × 791.14
  4. Step 4: Simplify right side
    1,350.55x = 1,474,637.49
  5. Step 5: Solve for x
    x = 1,474,637.49/1,350.55
  6. Step 6: Final answer
    x = 1,091.88

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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.