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Finding the Fourth Proportional to 217, 299.19 and 177.61

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Solution

The fourth proportional to 217, 299.19 and 177.61 is: 244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217 : 299.19 = 177.61 : x
  2. Step 2: Convert to fraction form
    217/299.19 = 177.61/x
  3. Step 3: Cross multiply
    217x = 299.19 × 177.61
  4. Step 4: Simplify right side
    217x = 53,139.14
  5. Step 5: Solve for x
    x = 53,139.14/217
  6. Step 6: Final answer
    x = 244.88

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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.