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Finding the Fourth Proportional to 2,212.56, 3,318.83 and 569.11

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Solution

The fourth proportional to 2,212.56, 3,318.83 and 569.11 is: 853.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.56 : 3,318.83 = 569.11 : x
  2. Step 2: Convert to fraction form
    2,212.56/3,318.83 = 569.11/x
  3. Step 3: Cross multiply
    2,212.56x = 3,318.83 × 569.11
  4. Step 4: Simplify right side
    2,212.56x = 1,888,779.34
  5. Step 5: Solve for x
    x = 1,888,779.34/2,212.56
  6. Step 6: Final answer
    x = 853.66

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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.