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Finding the Fourth Proportional to 234.55, 322.68 and 213.76

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Solution

The fourth proportional to 234.55, 322.68 and 213.76 is: 294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.55 : 322.68 = 213.76 : x
  2. Step 2: Convert to fraction form
    234.55/322.68 = 213.76/x
  3. Step 3: Cross multiply
    234.55x = 322.68 × 213.76
  4. Step 4: Simplify right side
    234.55x = 68,976.08
  5. Step 5: Solve for x
    x = 68,976.08/234.55
  6. Step 6: Final answer
    x = 294.08

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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.