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Finding the Fourth Proportional to 234.33, 322.63 and 197.40

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Solution

The fourth proportional to 234.33, 322.63 and 197.40 is: 271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.33 : 322.63 = 197.40 : x
  2. Step 2: Convert to fraction form
    234.33/322.63 = 197.40/x
  3. Step 3: Cross multiply
    234.33x = 322.63 × 197.40
  4. Step 4: Simplify right side
    234.33x = 63,687.16
  5. Step 5: Solve for x
    x = 63,687.16/234.33
  6. Step 6: Final answer
    x = 271.78

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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.