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Finding the Fourth Proportional to 325.28, 487.47 and 163.07

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Solution

The fourth proportional to 325.28, 487.47 and 163.07 is: 244.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.28 : 487.47 = 163.07 : x
  2. Step 2: Convert to fraction form
    325.28/487.47 = 163.07/x
  3. Step 3: Cross multiply
    325.28x = 487.47 × 163.07
  4. Step 4: Simplify right side
    325.28x = 79,491.73
  5. Step 5: Solve for x
    x = 79,491.73/325.28
  6. Step 6: Final answer
    x = 244.38

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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.