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Finding the Fourth Proportional to 1,080.60, 1,620.90 and 963.15

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Solution

The fourth proportional to 1,080.60, 1,620.90 and 963.15 is: 1,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.60 : 1,620.90 = 963.15 : x
  2. Step 2: Convert to fraction form
    1,080.60/1,620.90 = 963.15/x
  3. Step 3: Cross multiply
    1,080.60x = 1,620.90 × 963.15
  4. Step 4: Simplify right side
    1,080.60x = 1,561,169.84
  5. Step 5: Solve for x
    x = 1,561,169.84/1,080.60
  6. Step 6: Final answer
    x = 1,444.73

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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.