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Finding the Fourth Proportional to 149.27, 204.77 and 139.95

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Solution

The fourth proportional to 149.27, 204.77 and 139.95 is: 191.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.27 : 204.77 = 139.95 : x
  2. Step 2: Convert to fraction form
    149.27/204.77 = 139.95/x
  3. Step 3: Cross multiply
    149.27x = 204.77 × 139.95
  4. Step 4: Simplify right side
    149.27x = 28,657.91
  5. Step 5: Solve for x
    x = 28,657.91/149.27
  6. Step 6: Final answer
    x = 191.99

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.