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Finding the Fourth Proportional to 487.96, 732.09 and 163.37

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Solution

The fourth proportional to 487.96, 732.09 and 163.37 is: 245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.96 : 732.09 = 163.37 : x
  2. Step 2: Convert to fraction form
    487.96/732.09 = 163.37/x
  3. Step 3: Cross multiply
    487.96x = 732.09 × 163.37
  4. Step 4: Simplify right side
    487.96x = 119,601.54
  5. Step 5: Solve for x
    x = 119,601.54/487.96
  6. Step 6: Final answer
    x = 245.11

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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.