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Finding the Fourth Proportional to 297.81, 445.37 and 243.27

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Solution

The fourth proportional to 297.81, 445.37 and 243.27 is: 363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.81 : 445.37 = 243.27 : x
  2. Step 2: Convert to fraction form
    297.81/445.37 = 243.27/x
  3. Step 3: Cross multiply
    297.81x = 445.37 × 243.27
  4. Step 4: Simplify right side
    297.81x = 108,343.94
  5. Step 5: Solve for x
    x = 108,343.94/297.81
  6. Step 6: Final answer
    x = 363.80

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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.