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Finding the Fourth Proportional to 397.55, 596.33 and 108.99

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Solution

The fourth proportional to 397.55, 596.33 and 108.99 is: 163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.55 : 596.33 = 108.99 : x
  2. Step 2: Convert to fraction form
    397.55/596.33 = 108.99/x
  3. Step 3: Cross multiply
    397.55x = 596.33 × 108.99
  4. Step 4: Simplify right side
    397.55x = 64,993.46
  5. Step 5: Solve for x
    x = 64,993.46/397.55
  6. Step 6: Final answer
    x = 163.49

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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.