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Finding the Fourth Proportional to 131.03, 196.63 and 57.97

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Solution

The fourth proportional to 131.03, 196.63 and 57.97 is: 86.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.03 : 196.63 = 57.97 : x
  2. Step 2: Convert to fraction form
    131.03/196.63 = 57.97/x
  3. Step 3: Cross multiply
    131.03x = 196.63 × 57.97
  4. Step 4: Simplify right side
    131.03x = 11,397.64
  5. Step 5: Solve for x
    x = 11,397.64/131.03
  6. Step 6: Final answer
    x = 86.98

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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.