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Finding the Third Proportional to 738.38 and 1,211.06

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Solution

The third proportional to 738.38 and 1,211.06 is: 1,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.38 : 1,211.06 = 1,211.06 : x
  2. Step 2: Convert to fraction form
    738.38/1,211.06 = 1,211.06/x
  3. Step 3: Cross multiply
    738.38x = 1,211.06 × 1,211.06
  4. Step 4: Simplify right side
    738.38x = 1,466,672.38
  5. Step 5: Solve for x
    x = 1,466,672.38/738.38
  6. Step 6: Final answer
    x = 1,986.35

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.