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Finding the Third Proportional to 156 and 359.75

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Solution

The third proportional to 156 and 359.75 is: 829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156 : 359.75 = 359.75 : x
  2. Step 2: Convert to fraction form
    156/359.75 = 359.75/x
  3. Step 3: Cross multiply
    156x = 359.75 × 359.75
  4. Step 4: Simplify right side
    156x = 129,420.06
  5. Step 5: Solve for x
    x = 129,420.06/156
  6. Step 6: Final answer
    x = 829.62

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.