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Finding the Fourth Proportional to 662.45, 993.87 and 223.74

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Solution

The fourth proportional to 662.45, 993.87 and 223.74 is: 335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.45 : 993.87 = 223.74 : x
  2. Step 2: Convert to fraction form
    662.45/993.87 = 223.74/x
  3. Step 3: Cross multiply
    662.45x = 993.87 × 223.74
  4. Step 4: Simplify right side
    662.45x = 222,368.47
  5. Step 5: Solve for x
    x = 222,368.47/662.45
  6. Step 6: Final answer
    x = 335.68

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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.