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Finding the Fourth Proportional to 666.05, 999.09 and 179.12

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Solution

The fourth proportional to 666.05, 999.09 and 179.12 is: 268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.05 : 999.09 = 179.12 : x
  2. Step 2: Convert to fraction form
    666.05/999.09 = 179.12/x
  3. Step 3: Cross multiply
    666.05x = 999.09 × 179.12
  4. Step 4: Simplify right side
    666.05x = 178,952.01
  5. Step 5: Solve for x
    x = 178,952.01/666.05
  6. Step 6: Final answer
    x = 268.68

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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.