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Finding the Fourth Proportional to 343.52, 473.92 and 212.56

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Solution

The fourth proportional to 343.52, 473.92 and 212.56 is: 293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.52 : 473.92 = 212.56 : x
  2. Step 2: Convert to fraction form
    343.52/473.92 = 212.56/x
  3. Step 3: Cross multiply
    343.52x = 473.92 × 212.56
  4. Step 4: Simplify right side
    343.52x = 100,736.44
  5. Step 5: Solve for x
    x = 100,736.44/343.52
  6. Step 6: Final answer
    x = 293.25

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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.