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Finding the Fourth Proportional to 297.81, 447.05 and 228.56

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Solution

The fourth proportional to 297.81, 447.05 and 228.56 is: 343.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.81 : 447.05 = 228.56 : x
  2. Step 2: Convert to fraction form
    297.81/447.05 = 228.56/x
  3. Step 3: Cross multiply
    297.81x = 447.05 × 228.56
  4. Step 4: Simplify right side
    297.81x = 102,176.08
  5. Step 5: Solve for x
    x = 102,176.08/297.81
  6. Step 6: Final answer
    x = 343.09

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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.