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Finding the Fourth Proportional to 1,549, 2,323.86 and 1,115.38

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Solution

The fourth proportional to 1,549, 2,323.86 and 1,115.38 is: 1,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549 : 2,323.86 = 1,115.38 : x
  2. Step 2: Convert to fraction form
    1,549/2,323.86 = 1,115.38/x
  3. Step 3: Cross multiply
    1,549x = 2,323.86 × 1,115.38
  4. Step 4: Simplify right side
    1,549x = 2,591,986.97
  5. Step 5: Solve for x
    x = 2,591,986.97/1,549
  6. Step 6: Final answer
    x = 1,673.33

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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.