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Finding the Third Proportional to 790.63 and 1,729.56

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Solution

The third proportional to 790.63 and 1,729.56 is: 3,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.63 : 1,729.56 = 1,729.56 : x
  2. Step 2: Convert to fraction form
    790.63/1,729.56 = 1,729.56/x
  3. Step 3: Cross multiply
    790.63x = 1,729.56 × 1,729.56
  4. Step 4: Simplify right side
    790.63x = 2,991,386.44
  5. Step 5: Solve for x
    x = 2,991,386.44/790.63
  6. Step 6: Final answer
    x = 3,783.57

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.