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Finding the Fourth Proportional to 118.66, 178.03 and 50.19

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Solution

The fourth proportional to 118.66, 178.03 and 50.19 is: 75.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.66 : 178.03 = 50.19 : x
  2. Step 2: Convert to fraction form
    118.66/178.03 = 50.19/x
  3. Step 3: Cross multiply
    118.66x = 178.03 × 50.19
  4. Step 4: Simplify right side
    118.66x = 8,935.33
  5. Step 5: Solve for x
    x = 8,935.33/118.66
  6. Step 6: Final answer
    x = 75.30

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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.