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Finding the Fourth Proportional to 96.48, 133.08 and 80.20

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Solution

The fourth proportional to 96.48, 133.08 and 80.20 is: 110.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.48 : 133.08 = 80.20 : x
  2. Step 2: Convert to fraction form
    96.48/133.08 = 80.20/x
  3. Step 3: Cross multiply
    96.48x = 133.08 × 80.20
  4. Step 4: Simplify right side
    96.48x = 10,673.02
  5. Step 5: Solve for x
    x = 10,673.02/96.48
  6. Step 6: Final answer
    x = 110.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.