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Finding the Fourth Proportional to 214.92, 298.68 and 212.70

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Solution

The fourth proportional to 214.92, 298.68 and 212.70 is: 295.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.92 : 298.68 = 212.70 : x
  2. Step 2: Convert to fraction form
    214.92/298.68 = 212.70/x
  3. Step 3: Cross multiply
    214.92x = 298.68 × 212.70
  4. Step 4: Simplify right side
    214.92x = 63,529.24
  5. Step 5: Solve for x
    x = 63,529.24/214.92
  6. Step 6: Final answer
    x = 295.59

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.