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Finding the Fourth Proportional to 198.03, 297.05 and 61.07

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Solution

The fourth proportional to 198.03, 297.05 and 61.07 is: 91.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.03 : 297.05 = 61.07 : x
  2. Step 2: Convert to fraction form
    198.03/297.05 = 61.07/x
  3. Step 3: Cross multiply
    198.03x = 297.05 × 61.07
  4. Step 4: Simplify right side
    198.03x = 18,139.05
  5. Step 5: Solve for x
    x = 18,139.05/198.03
  6. Step 6: Final answer
    x = 91.60

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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.