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Finding the Fourth Proportional to 135.73, 204.40 and 126.62

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Solution

The fourth proportional to 135.73, 204.40 and 126.62 is: 190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.73 : 204.40 = 126.62 : x
  2. Step 2: Convert to fraction form
    135.73/204.40 = 126.62/x
  3. Step 3: Cross multiply
    135.73x = 204.40 × 126.62
  4. Step 4: Simplify right side
    135.73x = 25,881.35
  5. Step 5: Solve for x
    x = 25,881.35/135.73
  6. Step 6: Final answer
    x = 190.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.