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Finding the Fourth Proportional to 164.89, 248.45 and 136.63

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Solution

The fourth proportional to 164.89, 248.45 and 136.63 is: 205.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.89 : 248.45 = 136.63 : x
  2. Step 2: Convert to fraction form
    164.89/248.45 = 136.63/x
  3. Step 3: Cross multiply
    164.89x = 248.45 × 136.63
  4. Step 4: Simplify right side
    164.89x = 33,945.72
  5. Step 5: Solve for x
    x = 33,945.72/164.89
  6. Step 6: Final answer
    x = 205.87

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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.