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Finding the Fourth Proportional to 297.17, 445.92 and 123.81

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Solution

The fourth proportional to 297.17, 445.92 and 123.81 is: 185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.17 : 445.92 = 123.81 : x
  2. Step 2: Convert to fraction form
    297.17/445.92 = 123.81/x
  3. Step 3: Cross multiply
    297.17x = 445.92 × 123.81
  4. Step 4: Simplify right side
    297.17x = 55,209.36
  5. Step 5: Solve for x
    x = 55,209.36/297.17
  6. Step 6: Final answer
    x = 185.78

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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.