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Finding the Fourth Proportional to 371.35, 557.36 and 198.16

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Solution

The fourth proportional to 371.35, 557.36 and 198.16 is: 297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.35 : 557.36 = 198.16 : x
  2. Step 2: Convert to fraction form
    371.35/557.36 = 198.16/x
  3. Step 3: Cross multiply
    371.35x = 557.36 × 198.16
  4. Step 4: Simplify right side
    371.35x = 110,446.46
  5. Step 5: Solve for x
    x = 110,446.46/371.35
  6. Step 6: Final answer
    x = 297.42

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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.