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Finding the Fourth Proportional to 131.14, 197.48 and 97.14

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Solution

The fourth proportional to 131.14, 197.48 and 97.14 is: 146.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.14 : 197.48 = 97.14 : x
  2. Step 2: Convert to fraction form
    131.14/197.48 = 97.14/x
  3. Step 3: Cross multiply
    131.14x = 197.48 × 97.14
  4. Step 4: Simplify right side
    131.14x = 19,183.46
  5. Step 5: Solve for x
    x = 19,183.46/131.14
  6. Step 6: Final answer
    x = 146.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.