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Finding the Fourth Proportional to 1,268.33, 1,902.69 and 537.92

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Solution

The fourth proportional to 1,268.33, 1,902.69 and 537.92 is: 806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.33 : 1,902.69 = 537.92 : x
  2. Step 2: Convert to fraction form
    1,268.33/1,902.69 = 537.92/x
  3. Step 3: Cross multiply
    1,268.33x = 1,902.69 × 537.92
  4. Step 4: Simplify right side
    1,268.33x = 1,023,485.49
  5. Step 5: Solve for x
    x = 1,023,485.49/1,268.33
  6. Step 6: Final answer
    x = 806.96

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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.