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Finding the Fourth Proportional to 343.35, 473.81 and 212.38

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Solution

The fourth proportional to 343.35, 473.81 and 212.38 is: 293.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.35 : 473.81 = 212.38 : x
  2. Step 2: Convert to fraction form
    343.35/473.81 = 212.38/x
  3. Step 3: Cross multiply
    343.35x = 473.81 × 212.38
  4. Step 4: Simplify right side
    343.35x = 100,625.52
  5. Step 5: Solve for x
    x = 100,625.52/343.35
  6. Step 6: Final answer
    x = 293.07

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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.