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Finding the Third Proportional to 652.78 and 1,379.53

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Solution

The third proportional to 652.78 and 1,379.53 is: 2,915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.78 : 1,379.53 = 1,379.53 : x
  2. Step 2: Convert to fraction form
    652.78/1,379.53 = 1,379.53/x
  3. Step 3: Cross multiply
    652.78x = 1,379.53 × 1,379.53
  4. Step 4: Simplify right side
    652.78x = 1,903,106.47
  5. Step 5: Solve for x
    x = 1,903,106.47/652.78
  6. Step 6: Final answer
    x = 2,915.38

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.