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Finding the Fourth Proportional to 131.09, 196.45 and 88.25

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Solution

The fourth proportional to 131.09, 196.45 and 88.25 is: 132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.09 : 196.45 = 88.25 : x
  2. Step 2: Convert to fraction form
    131.09/196.45 = 88.25/x
  3. Step 3: Cross multiply
    131.09x = 196.45 × 88.25
  4. Step 4: Simplify right side
    131.09x = 17,336.71
  5. Step 5: Solve for x
    x = 17,336.71/131.09
  6. Step 6: Final answer
    x = 132.25

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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.