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Finding the Fourth Proportional to 223.44, 308.39 and 136.14

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Solution

The fourth proportional to 223.44, 308.39 and 136.14 is: 187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.44 : 308.39 = 136.14 : x
  2. Step 2: Convert to fraction form
    223.44/308.39 = 136.14/x
  3. Step 3: Cross multiply
    223.44x = 308.39 × 136.14
  4. Step 4: Simplify right side
    223.44x = 41,984.21
  5. Step 5: Solve for x
    x = 41,984.21/223.44
  6. Step 6: Final answer
    x = 187.90

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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.