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Finding the Fourth Proportional to 165.36, 227.58 and 144.69

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Solution

The fourth proportional to 165.36, 227.58 and 144.69 is: 199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.36 : 227.58 = 144.69 : x
  2. Step 2: Convert to fraction form
    165.36/227.58 = 144.69/x
  3. Step 3: Cross multiply
    165.36x = 227.58 × 144.69
  4. Step 4: Simplify right side
    165.36x = 32,928.55
  5. Step 5: Solve for x
    x = 32,928.55/165.36
  6. Step 6: Final answer
    x = 199.13

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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.