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Finding the Fourth Proportional to 306.44, 458.76 and 197.92

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Solution

The fourth proportional to 306.44, 458.76 and 197.92 is: 296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.44 : 458.76 = 197.92 : x
  2. Step 2: Convert to fraction form
    306.44/458.76 = 197.92/x
  3. Step 3: Cross multiply
    306.44x = 458.76 × 197.92
  4. Step 4: Simplify right side
    306.44x = 90,797.78
  5. Step 5: Solve for x
    x = 90,797.78/306.44
  6. Step 6: Final answer
    x = 296.30

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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.