Home / 850.26-1,275.21-330.09

Finding the Fourth Proportional to 850.26, 1,275.21 and 330.09

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Solution

The fourth proportional to 850.26, 1,275.21 and 330.09 is: 495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.26 : 1,275.21 = 330.09 : x
  2. Step 2: Convert to fraction form
    850.26/1,275.21 = 330.09/x
  3. Step 3: Cross multiply
    850.26x = 1,275.21 × 330.09
  4. Step 4: Simplify right side
    850.26x = 420,934.07
  5. Step 5: Solve for x
    x = 420,934.07/850.26
  6. Step 6: Final answer
    x = 495.07

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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.