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Finding the Fourth Proportional to 1,443.68, 2,163.96 and 622.34

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Solution

The fourth proportional to 1,443.68, 2,163.96 and 622.34 is: 932.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.68 : 2,163.96 = 622.34 : x
  2. Step 2: Convert to fraction form
    1,443.68/2,163.96 = 622.34/x
  3. Step 3: Cross multiply
    1,443.68x = 2,163.96 × 622.34
  4. Step 4: Simplify right side
    1,443.68x = 1,346,708.05
  5. Step 5: Solve for x
    x = 1,346,708.05/1,443.68
  6. Step 6: Final answer
    x = 932.83

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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.