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Finding the Third Proportional to 436.22 and 917.44

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Solution

The third proportional to 436.22 and 917.44 is: 1,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.22 : 917.44 = 917.44 : x
  2. Step 2: Convert to fraction form
    436.22/917.44 = 917.44/x
  3. Step 3: Cross multiply
    436.22x = 917.44 × 917.44
  4. Step 4: Simplify right side
    436.22x = 841,691.57
  5. Step 5: Solve for x
    x = 841,691.57/436.22
  6. Step 6: Final answer
    x = 1,929.52

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.