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Finding the Fourth Proportional to 234.45, 322.85 and 168.84

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Solution

The fourth proportional to 234.45, 322.85 and 168.84 is: 232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.45 : 322.85 = 168.84 : x
  2. Step 2: Convert to fraction form
    234.45/322.85 = 168.84/x
  3. Step 3: Cross multiply
    234.45x = 322.85 × 168.84
  4. Step 4: Simplify right side
    234.45x = 54,510.42
  5. Step 5: Solve for x
    x = 54,510.42/234.45
  6. Step 6: Final answer
    x = 232.50

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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.