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Finding the Fourth Proportional to 404.54, 606.81 and 323.89

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Solution

The fourth proportional to 404.54, 606.81 and 323.89 is: 485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.54 : 606.81 = 323.89 : x
  2. Step 2: Convert to fraction form
    404.54/606.81 = 323.89/x
  3. Step 3: Cross multiply
    404.54x = 606.81 × 323.89
  4. Step 4: Simplify right side
    404.54x = 196,539.69
  5. Step 5: Solve for x
    x = 196,539.69/404.54
  6. Step 6: Final answer
    x = 485.84

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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.