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Finding the Fourth Proportional to 325.89, 488.43 and 163.35

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Solution

The fourth proportional to 325.89, 488.43 and 163.35 is: 244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.89 : 488.43 = 163.35 : x
  2. Step 2: Convert to fraction form
    325.89/488.43 = 163.35/x
  3. Step 3: Cross multiply
    325.89x = 488.43 × 163.35
  4. Step 4: Simplify right side
    325.89x = 79,785.04
  5. Step 5: Solve for x
    x = 79,785.04/325.89
  6. Step 6: Final answer
    x = 244.82

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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.