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Finding the Fourth Proportional to 656.38, 984.68 and 223.44

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Solution

The fourth proportional to 656.38, 984.68 and 223.44 is: 335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.38 : 984.68 = 223.44 : x
  2. Step 2: Convert to fraction form
    656.38/984.68 = 223.44/x
  3. Step 3: Cross multiply
    656.38x = 984.68 × 223.44
  4. Step 4: Simplify right side
    656.38x = 220,016.90
  5. Step 5: Solve for x
    x = 220,016.90/656.38
  6. Step 6: Final answer
    x = 335.20

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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.