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Finding the Fourth Proportional to 656.43, 984.65 and 223.89

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Solution

The fourth proportional to 656.43, 984.65 and 223.89 is: 335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.43 : 984.65 = 223.89 : x
  2. Step 2: Convert to fraction form
    656.43/984.65 = 223.89/x
  3. Step 3: Cross multiply
    656.43x = 984.65 × 223.89
  4. Step 4: Simplify right side
    656.43x = 220,453.29
  5. Step 5: Solve for x
    x = 220,453.29/656.43
  6. Step 6: Final answer
    x = 335.84

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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.