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Finding the Third Proportional to 170.86 and 259.45

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Solution

The third proportional to 170.86 and 259.45 is: 393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.86 : 259.45 = 259.45 : x
  2. Step 2: Convert to fraction form
    170.86/259.45 = 259.45/x
  3. Step 3: Cross multiply
    170.86x = 259.45 × 259.45
  4. Step 4: Simplify right side
    170.86x = 67,315.92
  5. Step 5: Solve for x
    x = 67,315.92/170.86
  6. Step 6: Final answer
    x = 393.98

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.