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Finding the Third Proportional to 1,305 and 1,953

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Solution

The third proportional to 1,305 and 1,953 is: 2,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305 : 1,953 = 1,953 : x
  2. Step 2: Convert to fraction form
    1,305/1,953 = 1,953/x
  3. Step 3: Cross multiply
    1,305x = 1,953 × 1,953
  4. Step 4: Simplify right side
    1,305x = 3,814,209
  5. Step 5: Solve for x
    x = 3,814,209/1,305
  6. Step 6: Final answer
    x = 2,922.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.