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Finding the Fourth Proportional to 234.96, 324.78 and 202.14

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Solution

The fourth proportional to 234.96, 324.78 and 202.14 is: 279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.96 : 324.78 = 202.14 : x
  2. Step 2: Convert to fraction form
    234.96/324.78 = 202.14/x
  3. Step 3: Cross multiply
    234.96x = 324.78 × 202.14
  4. Step 4: Simplify right side
    234.96x = 65,651.03
  5. Step 5: Solve for x
    x = 65,651.03/234.96
  6. Step 6: Final answer
    x = 279.41

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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.