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Finding the Fourth Proportional to 665.25, 998.01 and 203.06

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Solution

The fourth proportional to 665.25, 998.01 and 203.06 is: 304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.25 : 998.01 = 203.06 : x
  2. Step 2: Convert to fraction form
    665.25/998.01 = 203.06/x
  3. Step 3: Cross multiply
    665.25x = 998.01 × 203.06
  4. Step 4: Simplify right side
    665.25x = 202,650.92
  5. Step 5: Solve for x
    x = 202,650.92/665.25
  6. Step 6: Final answer
    x = 304.62

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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.