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Finding the Fourth Proportional to 1,179.29, 1,626.49 and 825.09

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Solution

The fourth proportional to 1,179.29, 1,626.49 and 825.09 is: 1,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.29 : 1,626.49 = 825.09 : x
  2. Step 2: Convert to fraction form
    1,179.29/1,626.49 = 825.09/x
  3. Step 3: Cross multiply
    1,179.29x = 1,626.49 × 825.09
  4. Step 4: Simplify right side
    1,179.29x = 1,342,000.63
  5. Step 5: Solve for x
    x = 1,342,000.63/1,179.29
  6. Step 6: Final answer
    x = 1,137.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.