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Finding the Fourth Proportional to 234.84, 324.28 and 157.26

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Solution

The fourth proportional to 234.84, 324.28 and 157.26 is: 217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.84 : 324.28 = 157.26 : x
  2. Step 2: Convert to fraction form
    234.84/324.28 = 157.26/x
  3. Step 3: Cross multiply
    234.84x = 324.28 × 157.26
  4. Step 4: Simplify right side
    234.84x = 50,996.27
  5. Step 5: Solve for x
    x = 50,996.27/234.84
  6. Step 6: Final answer
    x = 217.15

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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.