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Finding the Fourth Proportional to 293.43, 439.83 and 212.23

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Solution

The fourth proportional to 293.43, 439.83 and 212.23 is: 318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.43 : 439.83 = 212.23 : x
  2. Step 2: Convert to fraction form
    293.43/439.83 = 212.23/x
  3. Step 3: Cross multiply
    293.43x = 439.83 × 212.23
  4. Step 4: Simplify right side
    293.43x = 93,345.12
  5. Step 5: Solve for x
    x = 93,345.12/293.43
  6. Step 6: Final answer
    x = 318.12

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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.