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Finding the Fourth Proportional to 1,163.22, 1,604.49 and 743.70

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Solution

The fourth proportional to 1,163.22, 1,604.49 and 743.70 is: 1,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.22 : 1,604.49 = 743.70 : x
  2. Step 2: Convert to fraction form
    1,163.22/1,604.49 = 743.70/x
  3. Step 3: Cross multiply
    1,163.22x = 1,604.49 × 743.70
  4. Step 4: Simplify right side
    1,163.22x = 1,193,259.21
  5. Step 5: Solve for x
    x = 1,193,259.21/1,163.22
  6. Step 6: Final answer
    x = 1,025.82

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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.