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Finding the Fourth Proportional to 397.45, 596.17 and 123.56

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Solution

The fourth proportional to 397.45, 596.17 and 123.56 is: 185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.45 : 596.17 = 123.56 : x
  2. Step 2: Convert to fraction form
    397.45/596.17 = 123.56/x
  3. Step 3: Cross multiply
    397.45x = 596.17 × 123.56
  4. Step 4: Simplify right side
    397.45x = 73,659.78
  5. Step 5: Solve for x
    x = 73,659.78/397.45
  6. Step 6: Final answer
    x = 185.33

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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.