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Finding the Fourth Proportional to 755.94, 1,133.78 and 481.22

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Solution

The fourth proportional to 755.94, 1,133.78 and 481.22 is: 721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.94 : 1,133.78 = 481.22 : x
  2. Step 2: Convert to fraction form
    755.94/1,133.78 = 481.22/x
  3. Step 3: Cross multiply
    755.94x = 1,133.78 × 481.22
  4. Step 4: Simplify right side
    755.94x = 545,589.54
  5. Step 5: Solve for x
    x = 545,589.54/755.94
  6. Step 6: Final answer
    x = 721.74

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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.