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Finding the Third Proportional to 383.06 and 840.80

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Solution

The third proportional to 383.06 and 840.80 is: 1,845.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.06 : 840.80 = 840.80 : x
  2. Step 2: Convert to fraction form
    383.06/840.80 = 840.80/x
  3. Step 3: Cross multiply
    383.06x = 840.80 × 840.80
  4. Step 4: Simplify right side
    383.06x = 706,939.39
  5. Step 5: Solve for x
    x = 706,939.39/383.06
  6. Step 6: Final answer
    x = 1,845.49

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.