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Finding the Fourth Proportional to 97.75, 134.80 and 96.13

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Solution

The fourth proportional to 97.75, 134.80 and 96.13 is: 132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.75 : 134.80 = 96.13 : x
  2. Step 2: Convert to fraction form
    97.75/134.80 = 96.13/x
  3. Step 3: Cross multiply
    97.75x = 134.80 × 96.13
  4. Step 4: Simplify right side
    97.75x = 12,958.32
  5. Step 5: Solve for x
    x = 12,958.32/97.75
  6. Step 6: Final answer
    x = 132.57

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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.