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Finding the Fourth Proportional to 325.48, 487.98 and 163.08

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Solution

The fourth proportional to 325.48, 487.98 and 163.08 is: 244.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.48 : 487.98 = 163.08 : x
  2. Step 2: Convert to fraction form
    325.48/487.98 = 163.08/x
  3. Step 3: Cross multiply
    325.48x = 487.98 × 163.08
  4. Step 4: Simplify right side
    325.48x = 79,579.78
  5. Step 5: Solve for x
    x = 79,579.78/325.48
  6. Step 6: Final answer
    x = 244.50

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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.