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Finding the Fourth Proportional to 179.87, 248.21 and 101.18

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Solution

The fourth proportional to 179.87, 248.21 and 101.18 is: 139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.87 : 248.21 = 101.18 : x
  2. Step 2: Convert to fraction form
    179.87/248.21 = 101.18/x
  3. Step 3: Cross multiply
    179.87x = 248.21 × 101.18
  4. Step 4: Simplify right side
    179.87x = 25,112.14
  5. Step 5: Solve for x
    x = 25,112.14/179.87
  6. Step 6: Final answer
    x = 139.62

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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.