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Finding the Fourth Proportional to 306.80, 423.26 and 175.73

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Solution

The fourth proportional to 306.80, 423.26 and 175.73 is: 242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.80 : 423.26 = 175.73 : x
  2. Step 2: Convert to fraction form
    306.80/423.26 = 175.73/x
  3. Step 3: Cross multiply
    306.80x = 423.26 × 175.73
  4. Step 4: Simplify right side
    306.80x = 74,377.80
  5. Step 5: Solve for x
    x = 74,377.80/306.80
  6. Step 6: Final answer
    x = 242.43

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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.