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Finding the Fourth Proportional to 306.04, 422.30 and 195.48

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Solution

The fourth proportional to 306.04, 422.30 and 195.48 is: 269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.04 : 422.30 = 195.48 : x
  2. Step 2: Convert to fraction form
    306.04/422.30 = 195.48/x
  3. Step 3: Cross multiply
    306.04x = 422.30 × 195.48
  4. Step 4: Simplify right side
    306.04x = 82,551.20
  5. Step 5: Solve for x
    x = 82,551.20/306.04
  6. Step 6: Final answer
    x = 269.74

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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.