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Finding the Third Proportional to 853.35 and 1,356.86

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Solution

The third proportional to 853.35 and 1,356.86 is: 2,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.35 : 1,356.86 = 1,356.86 : x
  2. Step 2: Convert to fraction form
    853.35/1,356.86 = 1,356.86/x
  3. Step 3: Cross multiply
    853.35x = 1,356.86 × 1,356.86
  4. Step 4: Simplify right side
    853.35x = 1,841,056.76
  5. Step 5: Solve for x
    x = 1,841,056.76/853.35
  6. Step 6: Final answer
    x = 2,157.45

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.