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Finding the Fourth Proportional to 131.25, 197.01 and 94.80

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Solution

The fourth proportional to 131.25, 197.01 and 94.80 is: 142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.25 : 197.01 = 94.80 : x
  2. Step 2: Convert to fraction form
    131.25/197.01 = 94.80/x
  3. Step 3: Cross multiply
    131.25x = 197.01 × 94.80
  4. Step 4: Simplify right side
    131.25x = 18,676.55
  5. Step 5: Solve for x
    x = 18,676.55/131.25
  6. Step 6: Final answer
    x = 142.30

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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.