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Finding the Fourth Proportional to 131.96, 199.02 and 130.28

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Solution

The fourth proportional to 131.96, 199.02 and 130.28 is: 196.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.96 : 199.02 = 130.28 : x
  2. Step 2: Convert to fraction form
    131.96/199.02 = 130.28/x
  3. Step 3: Cross multiply
    131.96x = 199.02 × 130.28
  4. Step 4: Simplify right side
    131.96x = 25,927.82
  5. Step 5: Solve for x
    x = 25,927.82/131.96
  6. Step 6: Final answer
    x = 196.48

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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.