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Finding the Fourth Proportional to 234.29, 325 and 221.99

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Solution

The fourth proportional to 234.29, 325 and 221.99 is: 307.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.29 : 325 = 221.99 : x
  2. Step 2: Convert to fraction form
    234.29/325 = 221.99/x
  3. Step 3: Cross multiply
    234.29x = 325 × 221.99
  4. Step 4: Simplify right side
    234.29x = 72,146.75
  5. Step 5: Solve for x
    x = 72,146.75/234.29
  6. Step 6: Final answer
    x = 307.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.