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Finding the Fourth Proportional to 223.75, 336.03 and 198.64

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Solution

The fourth proportional to 223.75, 336.03 and 198.64 is: 298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.75 : 336.03 = 198.64 : x
  2. Step 2: Convert to fraction form
    223.75/336.03 = 198.64/x
  3. Step 3: Cross multiply
    223.75x = 336.03 × 198.64
  4. Step 4: Simplify right side
    223.75x = 66,749.00
  5. Step 5: Solve for x
    x = 66,749.00/223.75
  6. Step 6: Final answer
    x = 298.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.