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Finding the Fourth Proportional to 1,355.20, 2,032.89 and 662.44

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Solution

The fourth proportional to 1,355.20, 2,032.89 and 662.44 is: 993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.20 : 2,032.89 = 662.44 : x
  2. Step 2: Convert to fraction form
    1,355.20/2,032.89 = 662.44/x
  3. Step 3: Cross multiply
    1,355.20x = 2,032.89 × 662.44
  4. Step 4: Simplify right side
    1,355.20x = 1,346,667.65
  5. Step 5: Solve for x
    x = 1,346,667.65/1,355.20
  6. Step 6: Final answer
    x = 993.71

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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.