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Finding the Fourth Proportional to 293.85, 405.92 and 229.20

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Solution

The fourth proportional to 293.85, 405.92 and 229.20 is: 316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.85 : 405.92 = 229.20 : x
  2. Step 2: Convert to fraction form
    293.85/405.92 = 229.20/x
  3. Step 3: Cross multiply
    293.85x = 405.92 × 229.20
  4. Step 4: Simplify right side
    293.85x = 93,035.72
  5. Step 5: Solve for x
    x = 93,035.72/293.85
  6. Step 6: Final answer
    x = 316.61

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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.