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Finding the Fourth Proportional to 1,161.33, 1,741.94 and 381.23

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Solution

The fourth proportional to 1,161.33, 1,741.94 and 381.23 is: 571.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.33 : 1,741.94 = 381.23 : x
  2. Step 2: Convert to fraction form
    1,161.33/1,741.94 = 381.23/x
  3. Step 3: Cross multiply
    1,161.33x = 1,741.94 × 381.23
  4. Step 4: Simplify right side
    1,161.33x = 664,082.23
  5. Step 5: Solve for x
    x = 664,082.23/1,161.33
  6. Step 6: Final answer
    x = 571.83

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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.