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Finding the Fourth Proportional to 149.11, 223.27 and 102.98

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Solution

The fourth proportional to 149.11, 223.27 and 102.98 is: 154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.11 : 223.27 = 102.98 : x
  2. Step 2: Convert to fraction form
    149.11/223.27 = 102.98/x
  3. Step 3: Cross multiply
    149.11x = 223.27 × 102.98
  4. Step 4: Simplify right side
    149.11x = 22,992.65
  5. Step 5: Solve for x
    x = 22,992.65/149.11
  6. Step 6: Final answer
    x = 154.20

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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.