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Finding the Fourth Proportional to 234.95, 351.69 and 217.79

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Solution

The fourth proportional to 234.95, 351.69 and 217.79 is: 326.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.95 : 351.69 = 217.79 : x
  2. Step 2: Convert to fraction form
    234.95/351.69 = 217.79/x
  3. Step 3: Cross multiply
    234.95x = 351.69 × 217.79
  4. Step 4: Simplify right side
    234.95x = 76,592.81
  5. Step 5: Solve for x
    x = 76,592.81/234.95
  6. Step 6: Final answer
    x = 326.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.