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Finding the Fourth Proportional to 165.66, 248.40 and 88.44

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Solution

The fourth proportional to 165.66, 248.40 and 88.44 is: 132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.66 : 248.40 = 88.44 : x
  2. Step 2: Convert to fraction form
    165.66/248.40 = 88.44/x
  3. Step 3: Cross multiply
    165.66x = 248.40 × 88.44
  4. Step 4: Simplify right side
    165.66x = 21,968.50
  5. Step 5: Solve for x
    x = 21,968.50/165.66
  6. Step 6: Final answer
    x = 132.61

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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.