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Finding the Fourth Proportional to 207.74, 286.69 and 119.23

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Solution

The fourth proportional to 207.74, 286.69 and 119.23 is: 164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.74 : 286.69 = 119.23 : x
  2. Step 2: Convert to fraction form
    207.74/286.69 = 119.23/x
  3. Step 3: Cross multiply
    207.74x = 286.69 × 119.23
  4. Step 4: Simplify right side
    207.74x = 34,181.45
  5. Step 5: Solve for x
    x = 34,181.45/207.74
  6. Step 6: Final answer
    x = 164.54

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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.