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Finding the Fourth Proportional to 2,229.20, 3,344 and 585.72

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Solution

The fourth proportional to 2,229.20, 3,344 and 585.72 is: 878.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.20 : 3,344 = 585.72 : x
  2. Step 2: Convert to fraction form
    2,229.20/3,344 = 585.72/x
  3. Step 3: Cross multiply
    2,229.20x = 3,344 × 585.72
  4. Step 4: Simplify right side
    2,229.20x = 1,958,647.68
  5. Step 5: Solve for x
    x = 1,958,647.68/2,229.20
  6. Step 6: Final answer
    x = 878.63

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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.