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Finding the Fourth Proportional to 275.33, 379.76 and 216.41

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Solution

The fourth proportional to 275.33, 379.76 and 216.41 is: 298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.33 : 379.76 = 216.41 : x
  2. Step 2: Convert to fraction form
    275.33/379.76 = 216.41/x
  3. Step 3: Cross multiply
    275.33x = 379.76 × 216.41
  4. Step 4: Simplify right side
    275.33x = 82,180.88
  5. Step 5: Solve for x
    x = 82,180.88/275.33
  6. Step 6: Final answer
    x = 298.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.