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Finding the Fourth Proportional to 397.98, 596.79 and 154.35

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Solution

The fourth proportional to 397.98, 596.79 and 154.35 is: 231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.98 : 596.79 = 154.35 : x
  2. Step 2: Convert to fraction form
    397.98/596.79 = 154.35/x
  3. Step 3: Cross multiply
    397.98x = 596.79 × 154.35
  4. Step 4: Simplify right side
    397.98x = 92,114.54
  5. Step 5: Solve for x
    x = 92,114.54/397.98
  6. Step 6: Final answer
    x = 231.46

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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.