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Finding the Fourth Proportional to 1,243.49, 1,865.92 and 550.48

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Solution

The fourth proportional to 1,243.49, 1,865.92 and 550.48 is: 826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.49 : 1,865.92 = 550.48 : x
  2. Step 2: Convert to fraction form
    1,243.49/1,865.92 = 550.48/x
  3. Step 3: Cross multiply
    1,243.49x = 1,865.92 × 550.48
  4. Step 4: Simplify right side
    1,243.49x = 1,027,151.64
  5. Step 5: Solve for x
    x = 1,027,151.64/1,243.49
  6. Step 6: Final answer
    x = 826.02

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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.