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Finding the Fourth Proportional to 138.45, 190.51 and 134.44

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Solution

The fourth proportional to 138.45, 190.51 and 134.44 is: 184.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138.45 : 190.51 = 134.44 : x
  2. Step 2: Convert to fraction form
    138.45/190.51 = 134.44/x
  3. Step 3: Cross multiply
    138.45x = 190.51 × 134.44
  4. Step 4: Simplify right side
    138.45x = 25,611.73
  5. Step 5: Solve for x
    x = 25,611.73/138.45
  6. Step 6: Final answer
    x = 184.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.