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Finding the Fourth Proportional to 227.07, 312.44 and 220.24

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Solution

The fourth proportional to 227.07, 312.44 and 220.24 is: 303.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.07 : 312.44 = 220.24 : x
  2. Step 2: Convert to fraction form
    227.07/312.44 = 220.24/x
  3. Step 3: Cross multiply
    227.07x = 312.44 × 220.24
  4. Step 4: Simplify right side
    227.07x = 68,811.56
  5. Step 5: Solve for x
    x = 68,811.56/227.07
  6. Step 6: Final answer
    x = 303.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.