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Finding the Fourth Proportional to 788.83, 1,080.70 and 759.27

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Solution

The fourth proportional to 788.83, 1,080.70 and 759.27 is: 1,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.83 : 1,080.70 = 759.27 : x
  2. Step 2: Convert to fraction form
    788.83/1,080.70 = 759.27/x
  3. Step 3: Cross multiply
    788.83x = 1,080.70 × 759.27
  4. Step 4: Simplify right side
    788.83x = 820,543.09
  5. Step 5: Solve for x
    x = 820,543.09/788.83
  6. Step 6: Final answer
    x = 1,040.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.