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Finding the Fourth Proportional to 371.22, 511.97 and 223.82

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Solution

The fourth proportional to 371.22, 511.97 and 223.82 is: 308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.22 : 511.97 = 223.82 : x
  2. Step 2: Convert to fraction form
    371.22/511.97 = 223.82/x
  3. Step 3: Cross multiply
    371.22x = 511.97 × 223.82
  4. Step 4: Simplify right side
    371.22x = 114,587.37
  5. Step 5: Solve for x
    x = 114,587.37/371.22
  6. Step 6: Final answer
    x = 308.68

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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.