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Finding the Fourth Proportional to 325.35, 486.81 and 248.20

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Solution

The fourth proportional to 325.35, 486.81 and 248.20 is: 371.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.35 : 486.81 = 248.20 : x
  2. Step 2: Convert to fraction form
    325.35/486.81 = 248.20/x
  3. Step 3: Cross multiply
    325.35x = 486.81 × 248.20
  4. Step 4: Simplify right side
    325.35x = 120,825.02
  5. Step 5: Solve for x
    x = 120,825.02/325.35
  6. Step 6: Final answer
    x = 371.37

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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.