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Finding the Fourth Proportional to 716.44, 1,074.78 and 229.33

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Solution

The fourth proportional to 716.44, 1,074.78 and 229.33 is: 344.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.44 : 1,074.78 = 229.33 : x
  2. Step 2: Convert to fraction form
    716.44/1,074.78 = 229.33/x
  3. Step 3: Cross multiply
    716.44x = 1,074.78 × 229.33
  4. Step 4: Simplify right side
    716.44x = 246,479.30
  5. Step 5: Solve for x
    x = 246,479.30/716.44
  6. Step 6: Final answer
    x = 344.03

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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.