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Finding the Fourth Proportional to 225.57, 311.54 and 222.54

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Solution

The fourth proportional to 225.57, 311.54 and 222.54 is: 307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.57 : 311.54 = 222.54 : x
  2. Step 2: Convert to fraction form
    225.57/311.54 = 222.54/x
  3. Step 3: Cross multiply
    225.57x = 311.54 × 222.54
  4. Step 4: Simplify right side
    225.57x = 69,330.11
  5. Step 5: Solve for x
    x = 69,330.11/225.57
  6. Step 6: Final answer
    x = 307.36

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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.