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Finding the Fourth Proportional to 199.39, 299.08 and 131.00

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Solution

The fourth proportional to 199.39, 299.08 and 131.00 is: 196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.39 : 299.08 = 131.00 : x
  2. Step 2: Convert to fraction form
    199.39/299.08 = 131.00/x
  3. Step 3: Cross multiply
    199.39x = 299.08 × 131.00
  4. Step 4: Simplify right side
    199.39x = 39,180.91
  5. Step 5: Solve for x
    x = 39,180.91/199.39
  6. Step 6: Final answer
    x = 196.51

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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.