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Finding the Fourth Proportional to 222.00, 306.50 and 143.35

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Solution

The fourth proportional to 222.00, 306.50 and 143.35 is: 197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.00 : 306.50 = 143.35 : x
  2. Step 2: Convert to fraction form
    222.00/306.50 = 143.35/x
  3. Step 3: Cross multiply
    222.00x = 306.50 × 143.35
  4. Step 4: Simplify right side
    222.00x = 43,936.06
  5. Step 5: Solve for x
    x = 43,936.06/222.00
  6. Step 6: Final answer
    x = 197.91

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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.