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Finding the Fourth Proportional to 213.73, 295.49 and 189.11

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Solution

The fourth proportional to 213.73, 295.49 and 189.11 is: 261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.73 : 295.49 = 189.11 : x
  2. Step 2: Convert to fraction form
    213.73/295.49 = 189.11/x
  3. Step 3: Cross multiply
    213.73x = 295.49 × 189.11
  4. Step 4: Simplify right side
    213.73x = 55,881.33
  5. Step 5: Solve for x
    x = 55,881.33/213.73
  6. Step 6: Final answer
    x = 261.46

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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.