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Finding the Fourth Proportional to 1,454.62, 2,181.12 and 759.58

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Solution

The fourth proportional to 1,454.62, 2,181.12 and 759.58 is: 1,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.62 : 2,181.12 = 759.58 : x
  2. Step 2: Convert to fraction form
    1,454.62/2,181.12 = 759.58/x
  3. Step 3: Cross multiply
    1,454.62x = 2,181.12 × 759.58
  4. Step 4: Simplify right side
    1,454.62x = 1,656,735.13
  5. Step 5: Solve for x
    x = 1,656,735.13/1,454.62
  6. Step 6: Final answer
    x = 1,138.95

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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.