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Finding the Fourth Proportional to 2,206.26, 3,309.48 and 745.42

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Solution

The fourth proportional to 2,206.26, 3,309.48 and 745.42 is: 1,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.26 : 3,309.48 = 745.42 : x
  2. Step 2: Convert to fraction form
    2,206.26/3,309.48 = 745.42/x
  3. Step 3: Cross multiply
    2,206.26x = 3,309.48 × 745.42
  4. Step 4: Simplify right side
    2,206.26x = 2,466,952.58
  5. Step 5: Solve for x
    x = 2,466,952.58/2,206.26
  6. Step 6: Final answer
    x = 1,118.16

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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.