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Finding the Third Proportional to 1,351.13 and 1,528.31

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Solution

The third proportional to 1,351.13 and 1,528.31 is: 1,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.13 : 1,528.31 = 1,528.31 : x
  2. Step 2: Convert to fraction form
    1,351.13/1,528.31 = 1,528.31/x
  3. Step 3: Cross multiply
    1,351.13x = 1,528.31 × 1,528.31
  4. Step 4: Simplify right side
    1,351.13x = 2,335,739.10
  5. Step 5: Solve for x
    x = 2,335,739.10/1,351.13
  6. Step 6: Final answer
    x = 1,728.74

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.