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Finding the Fourth Proportional to 219.08, 326.77 and 194.76

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Solution

The fourth proportional to 219.08, 326.77 and 194.76 is: 290.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.08 : 326.77 = 194.76 : x
  2. Step 2: Convert to fraction form
    219.08/326.77 = 194.76/x
  3. Step 3: Cross multiply
    219.08x = 326.77 × 194.76
  4. Step 4: Simplify right side
    219.08x = 63,641.73
  5. Step 5: Solve for x
    x = 63,641.73/219.08
  6. Step 6: Final answer
    x = 290.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.