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Finding the Fourth Proportional to 850.27, 1,275.61 and 330.29

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Solution

The fourth proportional to 850.27, 1,275.61 and 330.29 is: 495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.27 : 1,275.61 = 330.29 : x
  2. Step 2: Convert to fraction form
    850.27/1,275.61 = 330.29/x
  3. Step 3: Cross multiply
    850.27x = 1,275.61 × 330.29
  4. Step 4: Simplify right side
    850.27x = 421,321.23
  5. Step 5: Solve for x
    x = 421,321.23/850.27
  6. Step 6: Final answer
    x = 495.51

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1.5x scale

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.