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Finding the Fourth Proportional to 165.51, 247.86 and 136.44

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Solution

The fourth proportional to 165.51, 247.86 and 136.44 is: 204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.51 : 247.86 = 136.44 : x
  2. Step 2: Convert to fraction form
    165.51/247.86 = 136.44/x
  3. Step 3: Cross multiply
    165.51x = 247.86 × 136.44
  4. Step 4: Simplify right side
    165.51x = 33,818.02
  5. Step 5: Solve for x
    x = 33,818.02/165.51
  6. Step 6: Final answer
    x = 204.33

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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.