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Finding the Fourth Proportional to 1,472.26, 2,031.70 and 851.26

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Solution

The fourth proportional to 1,472.26, 2,031.70 and 851.26 is: 1,174.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.26 : 2,031.70 = 851.26 : x
  2. Step 2: Convert to fraction form
    1,472.26/2,031.70 = 851.26/x
  3. Step 3: Cross multiply
    1,472.26x = 2,031.70 × 851.26
  4. Step 4: Simplify right side
    1,472.26x = 1,729,504.94
  5. Step 5: Solve for x
    x = 1,729,504.94/1,472.26
  6. Step 6: Final answer
    x = 1,174.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.