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Finding the Third Proportional to 165 and 359.50

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Solution

The third proportional to 165 and 359.50 is: 783.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    165 : 359.50 = 359.50 : x
  2. Step 2: Convert to fraction form
    165/359.50 = 359.50/x
  3. Step 3: Cross multiply
    165x = 359.50 × 359.50
  4. Step 4: Simplify right side
    165x = 129,240.25
  5. Step 5: Solve for x
    x = 129,240.25/165
  6. Step 6: Final answer
    x = 783.27

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.