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Finding the Fourth Proportional to 165.89, 248.74 and 114.48

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Solution

The fourth proportional to 165.89, 248.74 and 114.48 is: 171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.89 : 248.74 = 114.48 : x
  2. Step 2: Convert to fraction form
    165.89/248.74 = 114.48/x
  3. Step 3: Cross multiply
    165.89x = 248.74 × 114.48
  4. Step 4: Simplify right side
    165.89x = 28,475.47
  5. Step 5: Solve for x
    x = 28,475.47/165.89
  6. Step 6: Final answer
    x = 171.65

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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.