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Finding the Fourth Proportional to 222.06, 304.16 and 221.44

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Solution

The fourth proportional to 222.06, 304.16 and 221.44 is: 303.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.06 : 304.16 = 221.44 : x
  2. Step 2: Convert to fraction form
    222.06/304.16 = 221.44/x
  3. Step 3: Cross multiply
    222.06x = 304.16 × 221.44
  4. Step 4: Simplify right side
    222.06x = 67,353.19
  5. Step 5: Solve for x
    x = 67,353.19/222.06
  6. Step 6: Final answer
    x = 303.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.