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Finding the Fourth Proportional to 397.31, 596.00 and 108.75

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Solution

The fourth proportional to 397.31, 596.00 and 108.75 is: 163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.31 : 596.00 = 108.75 : x
  2. Step 2: Convert to fraction form
    397.31/596.00 = 108.75/x
  3. Step 3: Cross multiply
    397.31x = 596.00 × 108.75
  4. Step 4: Simplify right side
    397.31x = 64,815.27
  5. Step 5: Solve for x
    x = 64,815.27/397.31
  6. Step 6: Final answer
    x = 163.13

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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.