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Finding the Fourth Proportional to 662.17, 993.38 and 199.99

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Solution

The fourth proportional to 662.17, 993.38 and 199.99 is: 300.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.17 : 993.38 = 199.99 : x
  2. Step 2: Convert to fraction form
    662.17/993.38 = 199.99/x
  3. Step 3: Cross multiply
    662.17x = 993.38 × 199.99
  4. Step 4: Simplify right side
    662.17x = 198,666.24
  5. Step 5: Solve for x
    x = 198,666.24/662.17
  6. Step 6: Final answer
    x = 300.03

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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.