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Finding the Fourth Proportional to 406.26, 609.48 and 162.79

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Solution

The fourth proportional to 406.26, 609.48 and 162.79 is: 244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.26 : 609.48 = 162.79 : x
  2. Step 2: Convert to fraction form
    406.26/609.48 = 162.79/x
  3. Step 3: Cross multiply
    406.26x = 609.48 × 162.79
  4. Step 4: Simplify right side
    406.26x = 99,217.25
  5. Step 5: Solve for x
    x = 99,217.25/406.26
  6. Step 6: Final answer
    x = 244.22

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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.