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Finding the Fourth Proportional to 293.55, 439.92 and 221.33

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Solution

The fourth proportional to 293.55, 439.92 and 221.33 is: 331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.55 : 439.92 = 221.33 : x
  2. Step 2: Convert to fraction form
    293.55/439.92 = 221.33/x
  3. Step 3: Cross multiply
    293.55x = 439.92 × 221.33
  4. Step 4: Simplify right side
    293.55x = 97,367.49
  5. Step 5: Solve for x
    x = 97,367.49/293.55
  6. Step 6: Final answer
    x = 331.69

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.