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Finding the Third Proportional to 1,149.19 and 1,508.63

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Solution

The third proportional to 1,149.19 and 1,508.63 is: 1,980.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.19 : 1,508.63 = 1,508.63 : x
  2. Step 2: Convert to fraction form
    1,149.19/1,508.63 = 1,508.63/x
  3. Step 3: Cross multiply
    1,149.19x = 1,508.63 × 1,508.63
  4. Step 4: Simplify right side
    1,149.19x = 2,275,949.39
  5. Step 5: Solve for x
    x = 2,275,949.39/1,149.19
  6. Step 6: Final answer
    x = 1,980.49

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.