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Finding the Fourth Proportional to 198.04, 297.24 and 90.04

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Solution

The fourth proportional to 198.04, 297.24 and 90.04 is: 135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.04 : 297.24 = 90.04 : x
  2. Step 2: Convert to fraction form
    198.04/297.24 = 90.04/x
  3. Step 3: Cross multiply
    198.04x = 297.24 × 90.04
  4. Step 4: Simplify right side
    198.04x = 26,763.49
  5. Step 5: Solve for x
    x = 26,763.49/198.04
  6. Step 6: Final answer
    x = 135.14

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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.