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Finding the Fourth Proportional to 137.22, 188.08 and 135.39

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Solution

The fourth proportional to 137.22, 188.08 and 135.39 is: 185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.22 : 188.08 = 135.39 : x
  2. Step 2: Convert to fraction form
    137.22/188.08 = 135.39/x
  3. Step 3: Cross multiply
    137.22x = 188.08 × 135.39
  4. Step 4: Simplify right side
    137.22x = 25,464.15
  5. Step 5: Solve for x
    x = 25,464.15/137.22
  6. Step 6: Final answer
    x = 185.57

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.