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Finding the Fourth Proportional to 1,169.26, 1,754.19 and 621.29

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Solution

The fourth proportional to 1,169.26, 1,754.19 and 621.29 is: 932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.26 : 1,754.19 = 621.29 : x
  2. Step 2: Convert to fraction form
    1,169.26/1,754.19 = 621.29/x
  3. Step 3: Cross multiply
    1,169.26x = 1,754.19 × 621.29
  4. Step 4: Simplify right side
    1,169.26x = 1,089,865.09
  5. Step 5: Solve for x
    x = 1,089,865.09/1,169.26
  6. Step 6: Final answer
    x = 932.10

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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.