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Finding the Fourth Proportional to 165.22, 247.77 and 113.83

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Solution

The fourth proportional to 165.22, 247.77 and 113.83 is: 170.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.22 : 247.77 = 113.83 : x
  2. Step 2: Convert to fraction form
    165.22/247.77 = 113.83/x
  3. Step 3: Cross multiply
    165.22x = 247.77 × 113.83
  4. Step 4: Simplify right side
    165.22x = 28,203.04
  5. Step 5: Solve for x
    x = 28,203.04/165.22
  6. Step 6: Final answer
    x = 170.70

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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.