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Finding the Fourth Proportional to 205.48, 283.37 and 131.82

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Solution

The fourth proportional to 205.48, 283.37 and 131.82 is: 181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.48 : 283.37 = 131.82 : x
  2. Step 2: Convert to fraction form
    205.48/283.37 = 131.82/x
  3. Step 3: Cross multiply
    205.48x = 283.37 × 131.82
  4. Step 4: Simplify right side
    205.48x = 37,353.83
  5. Step 5: Solve for x
    x = 37,353.83/205.48
  6. Step 6: Final answer
    x = 181.79

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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.