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Finding the Fourth Proportional to 2,212.12, 3,318.34 and 568.62

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Solution

The fourth proportional to 2,212.12, 3,318.34 and 568.62 is: 852.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.12 : 3,318.34 = 568.62 : x
  2. Step 2: Convert to fraction form
    2,212.12/3,318.34 = 568.62/x
  3. Step 3: Cross multiply
    2,212.12x = 3,318.34 × 568.62
  4. Step 4: Simplify right side
    2,212.12x = 1,886,874.49
  5. Step 5: Solve for x
    x = 1,886,874.49/2,212.12
  6. Step 6: Final answer
    x = 852.97

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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.