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Finding the Fourth Proportional to 406.28, 608.91 and 233.09

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Solution

The fourth proportional to 406.28, 608.91 and 233.09 is: 349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.28 : 608.91 = 233.09 : x
  2. Step 2: Convert to fraction form
    406.28/608.91 = 233.09/x
  3. Step 3: Cross multiply
    406.28x = 608.91 × 233.09
  4. Step 4: Simplify right side
    406.28x = 141,930.83
  5. Step 5: Solve for x
    x = 141,930.83/406.28
  6. Step 6: Final answer
    x = 349.34

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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.