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Finding the Fourth Proportional to 137.27, 190.77 and 135.79

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Solution

The fourth proportional to 137.27, 190.77 and 135.79 is: 188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.27 : 190.77 = 135.79 : x
  2. Step 2: Convert to fraction form
    137.27/190.77 = 135.79/x
  3. Step 3: Cross multiply
    137.27x = 190.77 × 135.79
  4. Step 4: Simplify right side
    137.27x = 25,904.66
  5. Step 5: Solve for x
    x = 25,904.66/137.27
  6. Step 6: Final answer
    x = 188.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.