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Finding the Fourth Proportional to 135.79, 188.64 and 134.52

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Solution

The fourth proportional to 135.79, 188.64 and 134.52 is: 186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.79 : 188.64 = 134.52 : x
  2. Step 2: Convert to fraction form
    135.79/188.64 = 134.52/x
  3. Step 3: Cross multiply
    135.79x = 188.64 × 134.52
  4. Step 4: Simplify right side
    135.79x = 25,375.85
  5. Step 5: Solve for x
    x = 25,375.85/135.79
  6. Step 6: Final answer
    x = 186.88

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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.