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Finding the Fourth Proportional to 222.20, 305.64 and 193.04

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Solution

The fourth proportional to 222.20, 305.64 and 193.04 is: 265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.20 : 305.64 = 193.04 : x
  2. Step 2: Convert to fraction form
    222.20/305.64 = 193.04/x
  3. Step 3: Cross multiply
    222.20x = 305.64 × 193.04
  4. Step 4: Simplify right side
    222.20x = 59,000.75
  5. Step 5: Solve for x
    x = 59,000.75/222.20
  6. Step 6: Final answer
    x = 265.53

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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.