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Finding the Fourth Proportional to 297.22, 445.29 and 251.50

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Solution

The fourth proportional to 297.22, 445.29 and 251.50 is: 376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.22 : 445.29 = 251.50 : x
  2. Step 2: Convert to fraction form
    297.22/445.29 = 251.50/x
  3. Step 3: Cross multiply
    297.22x = 445.29 × 251.50
  4. Step 4: Simplify right side
    297.22x = 111,990.44
  5. Step 5: Solve for x
    x = 111,990.44/297.22
  6. Step 6: Final answer
    x = 376.79

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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.