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Finding the Fourth Proportional to 716.64, 1,074.94 and 229.69

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Solution

The fourth proportional to 716.64, 1,074.94 and 229.69 is: 344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.64 : 1,074.94 = 229.69 : x
  2. Step 2: Convert to fraction form
    716.64/1,074.94 = 229.69/x
  3. Step 3: Cross multiply
    716.64x = 1,074.94 × 229.69
  4. Step 4: Simplify right side
    716.64x = 246,902.97
  5. Step 5: Solve for x
    x = 246,902.97/716.64
  6. Step 6: Final answer
    x = 344.53

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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.