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Finding the Fourth Proportional to 182.80, 251.99 and 139.06

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Solution

The fourth proportional to 182.80, 251.99 and 139.06 is: 191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.80 : 251.99 = 139.06 : x
  2. Step 2: Convert to fraction form
    182.80/251.99 = 139.06/x
  3. Step 3: Cross multiply
    182.80x = 251.99 × 139.06
  4. Step 4: Simplify right side
    182.80x = 35,040.47
  5. Step 5: Solve for x
    x = 35,040.47/182.80
  6. Step 6: Final answer
    x = 191.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.