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Finding the Fourth Proportional to 662.09, 992.89 and 199.74

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Solution

The fourth proportional to 662.09, 992.89 and 199.74 is: 299.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.09 : 992.89 = 199.74 : x
  2. Step 2: Convert to fraction form
    662.09/992.89 = 199.74/x
  3. Step 3: Cross multiply
    662.09x = 992.89 × 199.74
  4. Step 4: Simplify right side
    662.09x = 198,323.82
  5. Step 5: Solve for x
    x = 198,323.82/662.09
  6. Step 6: Final answer
    x = 299.54

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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.