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Finding the Fourth Proportional to 254.36, 351.06 and 196.28

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Solution

The fourth proportional to 254.36, 351.06 and 196.28 is: 270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.36 : 351.06 = 196.28 : x
  2. Step 2: Convert to fraction form
    254.36/351.06 = 196.28/x
  3. Step 3: Cross multiply
    254.36x = 351.06 × 196.28
  4. Step 4: Simplify right side
    254.36x = 68,906.06
  5. Step 5: Solve for x
    x = 68,906.06/254.36
  6. Step 6: Final answer
    x = 270.90

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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.