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Finding the Fourth Proportional to 131.94, 199.04 and 131.67

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Solution

The fourth proportional to 131.94, 199.04 and 131.67 is: 198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.94 : 199.04 = 131.67 : x
  2. Step 2: Convert to fraction form
    131.94/199.04 = 131.67/x
  3. Step 3: Cross multiply
    131.94x = 199.04 × 131.67
  4. Step 4: Simplify right side
    131.94x = 26,206.94
  5. Step 5: Solve for x
    x = 26,206.94/131.94
  6. Step 6: Final answer
    x = 198.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.