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Finding the Fourth Proportional to 371.11, 556.27 and 197.67

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Solution

The fourth proportional to 371.11, 556.27 and 197.67 is: 296.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.11 : 556.27 = 197.67 : x
  2. Step 2: Convert to fraction form
    371.11/556.27 = 197.67/x
  3. Step 3: Cross multiply
    371.11x = 556.27 × 197.67
  4. Step 4: Simplify right side
    371.11x = 109,954.12
  5. Step 5: Solve for x
    x = 109,954.12/371.11
  6. Step 6: Final answer
    x = 296.29

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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.