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Finding the Fourth Proportional to 165.27, 248.62 and 137.93

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Solution

The fourth proportional to 165.27, 248.62 and 137.93 is: 207.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.27 : 248.62 = 137.93 : x
  2. Step 2: Convert to fraction form
    165.27/248.62 = 137.93/x
  3. Step 3: Cross multiply
    165.27x = 248.62 × 137.93
  4. Step 4: Simplify right side
    165.27x = 34,291.47
  5. Step 5: Solve for x
    x = 34,291.47/165.27
  6. Step 6: Final answer
    x = 207.49

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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.