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Finding the Third Proportional to 748.13 and 1,145.81

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Solution

The third proportional to 748.13 and 1,145.81 is: 1,754.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.13 : 1,145.81 = 1,145.81 : x
  2. Step 2: Convert to fraction form
    748.13/1,145.81 = 1,145.81/x
  3. Step 3: Cross multiply
    748.13x = 1,145.81 × 1,145.81
  4. Step 4: Simplify right side
    748.13x = 1,312,886.29
  5. Step 5: Solve for x
    x = 1,312,886.29/748.13
  6. Step 6: Final answer
    x = 1,754.90

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.