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Finding the Fourth Proportional to 2,231.03, 3,343.91 and 769.38

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Solution

The fourth proportional to 2,231.03, 3,343.91 and 769.38 is: 1,153.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.03 : 3,343.91 = 769.38 : x
  2. Step 2: Convert to fraction form
    2,231.03/3,343.91 = 769.38/x
  3. Step 3: Cross multiply
    2,231.03x = 3,343.91 × 769.38
  4. Step 4: Simplify right side
    2,231.03x = 2,572,733.63
  5. Step 5: Solve for x
    x = 2,572,733.63/2,231.03
  6. Step 6: Final answer
    x = 1,153.16

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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.