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Finding the Fourth Proportional to 1,494.31, 2,241.84 and 878.54

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Solution

The fourth proportional to 1,494.31, 2,241.84 and 878.54 is: 1,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.31 : 2,241.84 = 878.54 : x
  2. Step 2: Convert to fraction form
    1,494.31/2,241.84 = 878.54/x
  3. Step 3: Cross multiply
    1,494.31x = 2,241.84 × 878.54
  4. Step 4: Simplify right side
    1,494.31x = 1,969,534.90
  5. Step 5: Solve for x
    x = 1,969,534.90/1,494.31
  6. Step 6: Final answer
    x = 1,318.03

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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.