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Finding the Fourth Proportional to 237.63, 355.56 and 198.70

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Solution

The fourth proportional to 237.63, 355.56 and 198.70 is: 297.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.63 : 355.56 = 198.70 : x
  2. Step 2: Convert to fraction form
    237.63/355.56 = 198.70/x
  3. Step 3: Cross multiply
    237.63x = 355.56 × 198.70
  4. Step 4: Simplify right side
    237.63x = 70,650.14
  5. Step 5: Solve for x
    x = 70,650.14/237.63
  6. Step 6: Final answer
    x = 297.31

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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.