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Finding the Fourth Proportional to 227.41, 339.19 and 215.26

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Solution

The fourth proportional to 227.41, 339.19 and 215.26 is: 321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.41 : 339.19 = 215.26 : x
  2. Step 2: Convert to fraction form
    227.41/339.19 = 215.26/x
  3. Step 3: Cross multiply
    227.41x = 339.19 × 215.26
  4. Step 4: Simplify right side
    227.41x = 73,012.65
  5. Step 5: Solve for x
    x = 73,012.65/227.41
  6. Step 6: Final answer
    x = 321.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.