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Finding the Fourth Proportional to 397.82, 596.82 and 154.32

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Solution

The fourth proportional to 397.82, 596.82 and 154.32 is: 231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.82 : 596.82 = 154.32 : x
  2. Step 2: Convert to fraction form
    397.82/596.82 = 154.32/x
  3. Step 3: Cross multiply
    397.82x = 596.82 × 154.32
  4. Step 4: Simplify right side
    397.82x = 92,101.26
  5. Step 5: Solve for x
    x = 92,101.26/397.82
  6. Step 6: Final answer
    x = 231.51

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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.