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Finding the Fourth Proportional to 404.62, 606.81 and 161.14

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Solution

The fourth proportional to 404.62, 606.81 and 161.14 is: 241.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.62 : 606.81 = 161.14 : x
  2. Step 2: Convert to fraction form
    404.62/606.81 = 161.14/x
  3. Step 3: Cross multiply
    404.62x = 606.81 × 161.14
  4. Step 4: Simplify right side
    404.62x = 97,781.36
  5. Step 5: Solve for x
    x = 97,781.36/404.62
  6. Step 6: Final answer
    x = 241.66

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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.