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Finding the Fourth Proportional to 2,199.85, 3,300.09 and 738.51

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Solution

The fourth proportional to 2,199.85, 3,300.09 and 738.51 is: 1,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.85 : 3,300.09 = 738.51 : x
  2. Step 2: Convert to fraction form
    2,199.85/3,300.09 = 738.51/x
  3. Step 3: Cross multiply
    2,199.85x = 3,300.09 × 738.51
  4. Step 4: Simplify right side
    2,199.85x = 2,437,149.47
  5. Step 5: Solve for x
    x = 2,437,149.47/2,199.85
  6. Step 6: Final answer
    x = 1,107.87

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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.