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Finding the Fourth Proportional to 165.56, 248.42 and 88.51

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Solution

The fourth proportional to 165.56, 248.42 and 88.51 is: 132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.56 : 248.42 = 88.51 : x
  2. Step 2: Convert to fraction form
    165.56/248.42 = 88.51/x
  3. Step 3: Cross multiply
    165.56x = 248.42 × 88.51
  4. Step 4: Simplify right side
    165.56x = 21,986.59
  5. Step 5: Solve for x
    x = 21,986.59/165.56
  6. Step 6: Final answer
    x = 132.80

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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.