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Finding the Fourth Proportional to 154.54, 213.22 and 92.32

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Solution

The fourth proportional to 154.54, 213.22 and 92.32 is: 127.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.54 : 213.22 = 92.32 : x
  2. Step 2: Convert to fraction form
    154.54/213.22 = 92.32/x
  3. Step 3: Cross multiply
    154.54x = 213.22 × 92.32
  4. Step 4: Simplify right side
    154.54x = 19,684.73
  5. Step 5: Solve for x
    x = 19,684.73/154.54
  6. Step 6: Final answer
    x = 127.38

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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.