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Finding the Fourth Proportional to 2,229.74, 3,344.61 and 914.21

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Solution

The fourth proportional to 2,229.74, 3,344.61 and 914.21 is: 1,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.74 : 3,344.61 = 914.21 : x
  2. Step 2: Convert to fraction form
    2,229.74/3,344.61 = 914.21/x
  3. Step 3: Cross multiply
    2,229.74x = 3,344.61 × 914.21
  4. Step 4: Simplify right side
    2,229.74x = 3,057,659.19
  5. Step 5: Solve for x
    x = 3,057,659.19/2,229.74
  6. Step 6: Final answer
    x = 1,371.31

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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.