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Finding the Fourth Proportional to 2,212.36, 3,318.73 and 568.91

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Solution

The fourth proportional to 2,212.36, 3,318.73 and 568.91 is: 853.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.36 : 3,318.73 = 568.91 : x
  2. Step 2: Convert to fraction form
    2,212.36/3,318.73 = 568.91/x
  3. Step 3: Cross multiply
    2,212.36x = 3,318.73 × 568.91
  4. Step 4: Simplify right side
    2,212.36x = 1,888,065.56
  5. Step 5: Solve for x
    x = 1,888,065.56/2,212.36
  6. Step 6: Final answer
    x = 853.42

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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.