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Finding the Fourth Proportional to 165.82, 248.78 and 50.28

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Solution

The fourth proportional to 165.82, 248.78 and 50.28 is: 75.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.82 : 248.78 = 50.28 : x
  2. Step 2: Convert to fraction form
    165.82/248.78 = 50.28/x
  3. Step 3: Cross multiply
    165.82x = 248.78 × 50.28
  4. Step 4: Simplify right side
    165.82x = 12,508.66
  5. Step 5: Solve for x
    x = 12,508.66/165.82
  6. Step 6: Final answer
    x = 75.44

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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.