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Finding the Fourth Proportional to 850.27, 1,275.09 and 668.02

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Solution

The fourth proportional to 850.27, 1,275.09 and 668.02 is: 1,001.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.27 : 1,275.09 = 668.02 : x
  2. Step 2: Convert to fraction form
    850.27/1,275.09 = 668.02/x
  3. Step 3: Cross multiply
    850.27x = 1,275.09 × 668.02
  4. Step 4: Simplify right side
    850.27x = 851,785.62
  5. Step 5: Solve for x
    x = 851,785.62/850.27
  6. Step 6: Final answer
    x = 1,001.78

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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.