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Finding the Fourth Proportional to 1,149.47, 1,722.92 and 754.91

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Solution

The fourth proportional to 1,149.47, 1,722.92 and 754.91 is: 1,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.47 : 1,722.92 = 754.91 : x
  2. Step 2: Convert to fraction form
    1,149.47/1,722.92 = 754.91/x
  3. Step 3: Cross multiply
    1,149.47x = 1,722.92 × 754.91
  4. Step 4: Simplify right side
    1,149.47x = 1,300,637.15
  5. Step 5: Solve for x
    x = 1,300,637.15/1,149.47
  6. Step 6: Final answer
    x = 1,131.52

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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.