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Finding the Fourth Proportional to 662.93, 993.79 and 229.78

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Solution

The fourth proportional to 662.93, 993.79 and 229.78 is: 344.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.93 : 993.79 = 229.78 : x
  2. Step 2: Convert to fraction form
    662.93/993.79 = 229.78/x
  3. Step 3: Cross multiply
    662.93x = 993.79 × 229.78
  4. Step 4: Simplify right side
    662.93x = 228,353.30
  5. Step 5: Solve for x
    x = 228,353.30/662.93
  6. Step 6: Final answer
    x = 344.46

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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.