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Finding the Fourth Proportional to 2,217.65, 3,326.42 and 574.17

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Solution

The fourth proportional to 2,217.65, 3,326.42 and 574.17 is: 861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.65 : 3,326.42 = 574.17 : x
  2. Step 2: Convert to fraction form
    2,217.65/3,326.42 = 574.17/x
  3. Step 3: Cross multiply
    2,217.65x = 3,326.42 × 574.17
  4. Step 4: Simplify right side
    2,217.65x = 1,909,927.70
  5. Step 5: Solve for x
    x = 1,909,927.70/2,217.65
  6. Step 6: Final answer
    x = 861.24

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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.