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Finding the Fourth Proportional to 327.30, 491.30 and 197.63

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Solution

The fourth proportional to 327.30, 491.30 and 197.63 is: 296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.30 : 491.30 = 197.63 : x
  2. Step 2: Convert to fraction form
    327.30/491.30 = 197.63/x
  3. Step 3: Cross multiply
    327.30x = 491.30 × 197.63
  4. Step 4: Simplify right side
    327.30x = 97,092.17
  5. Step 5: Solve for x
    x = 97,092.17/327.30
  6. Step 6: Final answer
    x = 296.65

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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.