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Finding the Fourth Proportional to 165.47, 248.47 and 141.44

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Solution

The fourth proportional to 165.47, 248.47 and 141.44 is: 212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.47 : 248.47 = 141.44 : x
  2. Step 2: Convert to fraction form
    165.47/248.47 = 141.44/x
  3. Step 3: Cross multiply
    165.47x = 248.47 × 141.44
  4. Step 4: Simplify right side
    165.47x = 35,142.00
  5. Step 5: Solve for x
    x = 35,142.00/165.47
  6. Step 6: Final answer
    x = 212.38

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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.