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Finding the Fourth Proportional to 306.70, 422.76 and 241.09

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Solution

The fourth proportional to 306.70, 422.76 and 241.09 is: 332.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.70 : 422.76 = 241.09 : x
  2. Step 2: Convert to fraction form
    306.70/422.76 = 241.09/x
  3. Step 3: Cross multiply
    306.70x = 422.76 × 241.09
  4. Step 4: Simplify right side
    306.70x = 101,923.21
  5. Step 5: Solve for x
    x = 101,923.21/306.70
  6. Step 6: Final answer
    x = 332.32

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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.