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Finding the Fourth Proportional to 165.56, 249.77 and 154.64

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Solution

The fourth proportional to 165.56, 249.77 and 154.64 is: 233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.56 : 249.77 = 154.64 : x
  2. Step 2: Convert to fraction form
    165.56/249.77 = 154.64/x
  3. Step 3: Cross multiply
    165.56x = 249.77 × 154.64
  4. Step 4: Simplify right side
    165.56x = 38,624.43
  5. Step 5: Solve for x
    x = 38,624.43/165.56
  6. Step 6: Final answer
    x = 233.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.