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Finding the Fourth Proportional to 665.99, 998.90 and 179.00

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Solution

The fourth proportional to 665.99, 998.90 and 179.00 is: 268.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.99 : 998.90 = 179.00 : x
  2. Step 2: Convert to fraction form
    665.99/998.90 = 179.00/x
  3. Step 3: Cross multiply
    665.99x = 998.90 × 179.00
  4. Step 4: Simplify right side
    665.99x = 178,797.21
  5. Step 5: Solve for x
    x = 178,797.21/665.99
  6. Step 6: Final answer
    x = 268.47

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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.