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Finding the Third Proportional to 404.63 and 890.81

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Solution

The third proportional to 404.63 and 890.81 is: 1,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.63 : 890.81 = 890.81 : x
  2. Step 2: Convert to fraction form
    404.63/890.81 = 890.81/x
  3. Step 3: Cross multiply
    404.63x = 890.81 × 890.81
  4. Step 4: Simplify right side
    404.63x = 793,546.91
  5. Step 5: Solve for x
    x = 793,546.91/404.63
  6. Step 6: Final answer
    x = 1,961.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.