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Finding the Fourth Proportional to 222.03, 306.21 and 190.75

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Solution

The fourth proportional to 222.03, 306.21 and 190.75 is: 263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.03 : 306.21 = 190.75 : x
  2. Step 2: Convert to fraction form
    222.03/306.21 = 190.75/x
  3. Step 3: Cross multiply
    222.03x = 306.21 × 190.75
  4. Step 4: Simplify right side
    222.03x = 58,408.03
  5. Step 5: Solve for x
    x = 58,408.03/222.03
  6. Step 6: Final answer
    x = 263.07

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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.