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Finding the Fourth Proportional to 132.51, 197.81 and 116.31

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Solution

The fourth proportional to 132.51, 197.81 and 116.31 is: 173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.51 : 197.81 = 116.31 : x
  2. Step 2: Convert to fraction form
    132.51/197.81 = 116.31/x
  3. Step 3: Cross multiply
    132.51x = 197.81 × 116.31
  4. Step 4: Simplify right side
    132.51x = 23,007.28
  5. Step 5: Solve for x
    x = 23,007.28/132.51
  6. Step 6: Final answer
    x = 173.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.