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Finding the Fourth Proportional to 131.31, 197.01 and 122.04

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Solution

The fourth proportional to 131.31, 197.01 and 122.04 is: 183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.31 : 197.01 = 122.04 : x
  2. Step 2: Convert to fraction form
    131.31/197.01 = 122.04/x
  3. Step 3: Cross multiply
    131.31x = 197.01 × 122.04
  4. Step 4: Simplify right side
    131.31x = 24,043.10
  5. Step 5: Solve for x
    x = 24,043.10/131.31
  6. Step 6: Final answer
    x = 183.10

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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.