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Finding the Third Proportional to 351.38 and 770.63

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Solution

The third proportional to 351.38 and 770.63 is: 1,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.38 : 770.63 = 770.63 : x
  2. Step 2: Convert to fraction form
    351.38/770.63 = 770.63/x
  3. Step 3: Cross multiply
    351.38x = 770.63 × 770.63
  4. Step 4: Simplify right side
    351.38x = 593,862.89
  5. Step 5: Solve for x
    x = 593,862.89/351.38
  6. Step 6: Final answer
    x = 1,690.11

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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.