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Finding the Fourth Proportional to 293.20, 404.84 and 220.32

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Solution

The fourth proportional to 293.20, 404.84 and 220.32 is: 304.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.20 : 404.84 = 220.32 : x
  2. Step 2: Convert to fraction form
    293.20/404.84 = 220.32/x
  3. Step 3: Cross multiply
    293.20x = 404.84 × 220.32
  4. Step 4: Simplify right side
    293.20x = 89,194.35
  5. Step 5: Solve for x
    x = 89,194.35/293.20
  6. Step 6: Final answer
    x = 304.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.