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Finding the Fourth Proportional to 665.73, 998.64 and 226.98

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Solution

The fourth proportional to 665.73, 998.64 and 226.98 is: 340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.73 : 998.64 = 226.98 : x
  2. Step 2: Convert to fraction form
    665.73/998.64 = 226.98/x
  3. Step 3: Cross multiply
    665.73x = 998.64 × 226.98
  4. Step 4: Simplify right side
    665.73x = 226,671.31
  5. Step 5: Solve for x
    x = 226,671.31/665.73
  6. Step 6: Final answer
    x = 340.49

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Double scale
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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.