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Finding the Fourth Proportional to 165.69, 227.93 and 143.51

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Solution

The fourth proportional to 165.69, 227.93 and 143.51 is: 197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.69 : 227.93 = 143.51 : x
  2. Step 2: Convert to fraction form
    165.69/227.93 = 143.51/x
  3. Step 3: Cross multiply
    165.69x = 227.93 × 143.51
  4. Step 4: Simplify right side
    165.69x = 32,711.16
  5. Step 5: Solve for x
    x = 32,711.16/165.69
  6. Step 6: Final answer
    x = 197.42

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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.