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Finding the Fourth Proportional to 234.57, 324.08 and 198.35

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Solution

The fourth proportional to 234.57, 324.08 and 198.35 is: 274.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.57 : 324.08 = 198.35 : x
  2. Step 2: Convert to fraction form
    234.57/324.08 = 198.35/x
  3. Step 3: Cross multiply
    234.57x = 324.08 × 198.35
  4. Step 4: Simplify right side
    234.57x = 64,280.06
  5. Step 5: Solve for x
    x = 64,280.06/234.57
  6. Step 6: Final answer
    x = 274.03

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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.