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Finding the Fourth Proportional to 254.54, 350.48 and 217.61

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Solution

The fourth proportional to 254.54, 350.48 and 217.61 is: 299.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.54 : 350.48 = 217.61 : x
  2. Step 2: Convert to fraction form
    254.54/350.48 = 217.61/x
  3. Step 3: Cross multiply
    254.54x = 350.48 × 217.61
  4. Step 4: Simplify right side
    254.54x = 76,265.11
  5. Step 5: Solve for x
    x = 76,265.11/254.54
  6. Step 6: Final answer
    x = 299.63

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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.