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Finding the Fourth Proportional to 1,169.30, 1,754.22 and 961.41

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Solution

The fourth proportional to 1,169.30, 1,754.22 and 961.41 is: 1,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.30 : 1,754.22 = 961.41 : x
  2. Step 2: Convert to fraction form
    1,169.30/1,754.22 = 961.41/x
  3. Step 3: Cross multiply
    1,169.30x = 1,754.22 × 961.41
  4. Step 4: Simplify right side
    1,169.30x = 1,686,524.65
  5. Step 5: Solve for x
    x = 1,686,524.65/1,169.30
  6. Step 6: Final answer
    x = 1,442.34

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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.