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Finding the Fourth Proportional to 2,217.78, 3,326.41 and 574.19

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Solution

The fourth proportional to 2,217.78, 3,326.41 and 574.19 is: 861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.78 : 3,326.41 = 574.19 : x
  2. Step 2: Convert to fraction form
    2,217.78/3,326.41 = 574.19/x
  3. Step 3: Cross multiply
    2,217.78x = 3,326.41 × 574.19
  4. Step 4: Simplify right side
    2,217.78x = 1,909,991.36
  5. Step 5: Solve for x
    x = 1,909,991.36/2,217.78
  6. Step 6: Final answer
    x = 861.22

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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.