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Finding the Fourth Proportional to 397.56, 596.13 and 321.06

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Solution

The fourth proportional to 397.56, 596.13 and 321.06 is: 481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.56 : 596.13 = 321.06 : x
  2. Step 2: Convert to fraction form
    397.56/596.13 = 321.06/x
  3. Step 3: Cross multiply
    397.56x = 596.13 × 321.06
  4. Step 4: Simplify right side
    397.56x = 191,393.50
  5. Step 5: Solve for x
    x = 191,393.50/397.56
  6. Step 6: Final answer
    x = 481.42

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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.