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Finding the Fourth Proportional to 1,689.22, 2,532.62 and 799.26

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Solution

The fourth proportional to 1,689.22, 2,532.62 and 799.26 is: 1,198.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.22 : 2,532.62 = 799.26 : x
  2. Step 2: Convert to fraction form
    1,689.22/2,532.62 = 799.26/x
  3. Step 3: Cross multiply
    1,689.22x = 2,532.62 × 799.26
  4. Step 4: Simplify right side
    1,689.22x = 2,024,205.20
  5. Step 5: Solve for x
    x = 2,024,205.20/1,689.22
  6. Step 6: Final answer
    x = 1,198.31

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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.