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Finding the Fourth Proportional to 165.84, 249.21 and 148.92

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Solution

The fourth proportional to 165.84, 249.21 and 148.92 is: 223.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.84 : 249.21 = 148.92 : x
  2. Step 2: Convert to fraction form
    165.84/249.21 = 148.92/x
  3. Step 3: Cross multiply
    165.84x = 249.21 × 148.92
  4. Step 4: Simplify right side
    165.84x = 37,112.35
  5. Step 5: Solve for x
    x = 37,112.35/165.84
  6. Step 6: Final answer
    x = 223.78

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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.