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Finding the Third Proportional to 1,215.95 and 1,651.64

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Solution

The third proportional to 1,215.95 and 1,651.64 is: 2,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.95 : 1,651.64 = 1,651.64 : x
  2. Step 2: Convert to fraction form
    1,215.95/1,651.64 = 1,651.64/x
  3. Step 3: Cross multiply
    1,215.95x = 1,651.64 × 1,651.64
  4. Step 4: Simplify right side
    1,215.95x = 2,727,916.75
  5. Step 5: Solve for x
    x = 2,727,916.75/1,215.95
  6. Step 6: Final answer
    x = 2,243.45

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.