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Finding the Fourth Proportional to 665.99, 998.99 and 179.03

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Solution

The fourth proportional to 665.99, 998.99 and 179.03 is: 268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.99 : 998.99 = 179.03 : x
  2. Step 2: Convert to fraction form
    665.99/998.99 = 179.03/x
  3. Step 3: Cross multiply
    665.99x = 998.99 × 179.03
  4. Step 4: Simplify right side
    665.99x = 178,843.29
  5. Step 5: Solve for x
    x = 178,843.29/665.99
  6. Step 6: Final answer
    x = 268.54

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Double scale
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Similar ratio
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1.5x scale

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.