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Finding the Fourth Proportional to 1,166.38, 1,749.06 and 581.15

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Solution

The fourth proportional to 1,166.38, 1,749.06 and 581.15 is: 871.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.38 : 1,749.06 = 581.15 : x
  2. Step 2: Convert to fraction form
    1,166.38/1,749.06 = 581.15/x
  3. Step 3: Cross multiply
    1,166.38x = 1,749.06 × 581.15
  4. Step 4: Simplify right side
    1,166.38x = 1,016,470.59
  5. Step 5: Solve for x
    x = 1,016,470.59/1,166.38
  6. Step 6: Final answer
    x = 871.48

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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.