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Finding the Fourth Proportional to 135.92, 188.90 and 134.48

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Solution

The fourth proportional to 135.92, 188.90 and 134.48 is: 186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.92 : 188.90 = 134.48 : x
  2. Step 2: Convert to fraction form
    135.92/188.90 = 134.48/x
  3. Step 3: Cross multiply
    135.92x = 188.90 × 134.48
  4. Step 4: Simplify right side
    135.92x = 25,403.27
  5. Step 5: Solve for x
    x = 25,403.27/135.92
  6. Step 6: Final answer
    x = 186.90

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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.