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Finding the Fourth Proportional to 666.01, 998.96 and 300.83

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Solution

The fourth proportional to 666.01, 998.96 and 300.83 is: 451.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.01 : 998.96 = 300.83 : x
  2. Step 2: Convert to fraction form
    666.01/998.96 = 300.83/x
  3. Step 3: Cross multiply
    666.01x = 998.96 × 300.83
  4. Step 4: Simplify right side
    666.01x = 300,512.89
  5. Step 5: Solve for x
    x = 300,512.89/666.01
  6. Step 6: Final answer
    x = 451.21

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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.