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Finding the Fourth Proportional to 441.28, 661.02 and 224.56

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Solution

The fourth proportional to 441.28, 661.02 and 224.56 is: 336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.28 : 661.02 = 224.56 : x
  2. Step 2: Convert to fraction form
    441.28/661.02 = 224.56/x
  3. Step 3: Cross multiply
    441.28x = 661.02 × 224.56
  4. Step 4: Simplify right side
    441.28x = 148,438.65
  5. Step 5: Solve for x
    x = 148,438.65/441.28
  6. Step 6: Final answer
    x = 336.38

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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.