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Finding the Fourth Proportional to 149.06, 223.66 and 84.94

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Solution

The fourth proportional to 149.06, 223.66 and 84.94 is: 127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.06 : 223.66 = 84.94 : x
  2. Step 2: Convert to fraction form
    149.06/223.66 = 84.94/x
  3. Step 3: Cross multiply
    149.06x = 223.66 × 84.94
  4. Step 4: Simplify right side
    149.06x = 18,997.23
  5. Step 5: Solve for x
    x = 18,997.23/149.06
  6. Step 6: Final answer
    x = 127.44

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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.