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Finding the Fourth Proportional to 739.75, 1,109.64 and 226.75

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Solution

The fourth proportional to 739.75, 1,109.64 and 226.75 is: 340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.75 : 1,109.64 = 226.75 : x
  2. Step 2: Convert to fraction form
    739.75/1,109.64 = 226.75/x
  3. Step 3: Cross multiply
    739.75x = 1,109.64 × 226.75
  4. Step 4: Simplify right side
    739.75x = 251,610.87
  5. Step 5: Solve for x
    x = 251,610.87/739.75
  6. Step 6: Final answer
    x = 340.13

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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.