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Finding the Fourth Proportional to 371.12, 512.33 and 223.97

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Solution

The fourth proportional to 371.12, 512.33 and 223.97 is: 309.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.12 : 512.33 = 223.97 : x
  2. Step 2: Convert to fraction form
    371.12/512.33 = 223.97/x
  3. Step 3: Cross multiply
    371.12x = 512.33 × 223.97
  4. Step 4: Simplify right side
    371.12x = 114,742.87
  5. Step 5: Solve for x
    x = 114,742.87/371.12
  6. Step 6: Final answer
    x = 309.18

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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.