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Finding the Fourth Proportional to 969.96, 1,453.86 and 622.20

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Solution

The fourth proportional to 969.96, 1,453.86 and 622.20 is: 932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.96 : 1,453.86 = 622.20 : x
  2. Step 2: Convert to fraction form
    969.96/1,453.86 = 622.20/x
  3. Step 3: Cross multiply
    969.96x = 1,453.86 × 622.20
  4. Step 4: Simplify right side
    969.96x = 904,591.69
  5. Step 5: Solve for x
    x = 904,591.69/969.96
  6. Step 6: Final answer
    x = 932.61

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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.