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Finding the Fourth Proportional to 212.97, 293.70 and 191.37

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Solution

The fourth proportional to 212.97, 293.70 and 191.37 is: 263.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.97 : 293.70 = 191.37 : x
  2. Step 2: Convert to fraction form
    212.97/293.70 = 191.37/x
  3. Step 3: Cross multiply
    212.97x = 293.70 × 191.37
  4. Step 4: Simplify right side
    212.97x = 56,205.37
  5. Step 5: Solve for x
    x = 56,205.37/212.97
  6. Step 6: Final answer
    x = 263.91

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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.