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Finding the Fourth Proportional to 406.25, 609.72 and 162.94

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Solution

The fourth proportional to 406.25, 609.72 and 162.94 is: 244.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.25 : 609.72 = 162.94 : x
  2. Step 2: Convert to fraction form
    406.25/609.72 = 162.94/x
  3. Step 3: Cross multiply
    406.25x = 609.72 × 162.94
  4. Step 4: Simplify right side
    406.25x = 99,347.78
  5. Step 5: Solve for x
    x = 99,347.78/406.25
  6. Step 6: Final answer
    x = 244.55

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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.