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Finding the Fourth Proportional to 232.81, 348.99 and 212.76

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Solution

The fourth proportional to 232.81, 348.99 and 212.76 is: 318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.81 : 348.99 = 212.76 : x
  2. Step 2: Convert to fraction form
    232.81/348.99 = 212.76/x
  3. Step 3: Cross multiply
    232.81x = 348.99 × 212.76
  4. Step 4: Simplify right side
    232.81x = 74,251.11
  5. Step 5: Solve for x
    x = 74,251.11/232.81
  6. Step 6: Final answer
    x = 318.93

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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.