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Finding the Fourth Proportional to 307.89, 461.30 and 300.33

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Solution

The fourth proportional to 307.89, 461.30 and 300.33 is: 449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.89 : 461.30 = 300.33 : x
  2. Step 2: Convert to fraction form
    307.89/461.30 = 300.33/x
  3. Step 3: Cross multiply
    307.89x = 461.30 × 300.33
  4. Step 4: Simplify right side
    307.89x = 138,540.73
  5. Step 5: Solve for x
    x = 138,540.73/307.89
  6. Step 6: Final answer
    x = 449.97

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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.