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Finding the Fourth Proportional to 165.31, 247.73 and 88.22

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Solution

The fourth proportional to 165.31, 247.73 and 88.22 is: 132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.31 : 247.73 = 88.22 : x
  2. Step 2: Convert to fraction form
    165.31/247.73 = 88.22/x
  3. Step 3: Cross multiply
    165.31x = 247.73 × 88.22
  4. Step 4: Simplify right side
    165.31x = 21,854.92
  5. Step 5: Solve for x
    x = 21,854.92/165.31
  6. Step 6: Final answer
    x = 132.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.