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Finding the Fourth Proportional to 839, 1,259.04 and 743.96

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Solution

The fourth proportional to 839, 1,259.04 and 743.96 is: 1,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    839 : 1,259.04 = 743.96 : x
  2. Step 2: Convert to fraction form
    839/1,259.04 = 743.96/x
  3. Step 3: Cross multiply
    839x = 1,259.04 × 743.96
  4. Step 4: Simplify right side
    839x = 936,675.40
  5. Step 5: Solve for x
    x = 936,675.40/839
  6. Step 6: Final answer
    x = 1,116.42

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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.