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Finding the Fourth Proportional to 2,206.44, 3,309.66 and 745.61

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Solution

The fourth proportional to 2,206.44, 3,309.66 and 745.61 is: 1,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.44 : 3,309.66 = 745.61 : x
  2. Step 2: Convert to fraction form
    2,206.44/3,309.66 = 745.61/x
  3. Step 3: Cross multiply
    2,206.44x = 3,309.66 × 745.61
  4. Step 4: Simplify right side
    2,206.44x = 2,467,699.04
  5. Step 5: Solve for x
    x = 2,467,699.04/2,206.44
  6. Step 6: Final answer
    x = 1,118.41

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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.