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Finding the Fourth Proportional to 297.13, 445.80 and 220.73

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Solution

The fourth proportional to 297.13, 445.80 and 220.73 is: 331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.13 : 445.80 = 220.73 : x
  2. Step 2: Convert to fraction form
    297.13/445.80 = 220.73/x
  3. Step 3: Cross multiply
    297.13x = 445.80 × 220.73
  4. Step 4: Simplify right side
    297.13x = 98,401.43
  5. Step 5: Solve for x
    x = 98,401.43/297.13
  6. Step 6: Final answer
    x = 331.17

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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.