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Finding the Fourth Proportional to 731.22, 1,096.83 and 668.58

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Solution

The fourth proportional to 731.22, 1,096.83 and 668.58 is: 1,002.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.22 : 1,096.83 = 668.58 : x
  2. Step 2: Convert to fraction form
    731.22/1,096.83 = 668.58/x
  3. Step 3: Cross multiply
    731.22x = 1,096.83 × 668.58
  4. Step 4: Simplify right side
    731.22x = 733,318.60
  5. Step 5: Solve for x
    x = 733,318.60/731.22
  6. Step 6: Final answer
    x = 1,002.87

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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.