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Finding the Fourth Proportional to 131.32, 196.96 and 40.01

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Solution

The fourth proportional to 131.32, 196.96 and 40.01 is: 60.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.32 : 196.96 = 40.01 : x
  2. Step 2: Convert to fraction form
    131.32/196.96 = 40.01/x
  3. Step 3: Cross multiply
    131.32x = 196.96 × 40.01
  4. Step 4: Simplify right side
    131.32x = 7,880.37
  5. Step 5: Solve for x
    x = 7,880.37/131.32
  6. Step 6: Final answer
    x = 60.01

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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.