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Finding the Fourth Proportional to 193.44, 266.72 and 138.14

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Solution

The fourth proportional to 193.44, 266.72 and 138.14 is: 190.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.44 : 266.72 = 138.14 : x
  2. Step 2: Convert to fraction form
    193.44/266.72 = 138.14/x
  3. Step 3: Cross multiply
    193.44x = 266.72 × 138.14
  4. Step 4: Simplify right side
    193.44x = 36,842.68
  5. Step 5: Solve for x
    x = 36,842.68/193.44
  6. Step 6: Final answer
    x = 190.46

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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.