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Finding the Third Proportional to 491.63 and 1,296.56

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Solution

The third proportional to 491.63 and 1,296.56 is: 3,419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.63 : 1,296.56 = 1,296.56 : x
  2. Step 2: Convert to fraction form
    491.63/1,296.56 = 1,296.56/x
  3. Step 3: Cross multiply
    491.63x = 1,296.56 × 1,296.56
  4. Step 4: Simplify right side
    491.63x = 1,681,074.32
  5. Step 5: Solve for x
    x = 1,681,074.32/491.63
  6. Step 6: Final answer
    x = 3,419.42

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Why These Related Problems?

These problems maintain the same ratio (2.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.