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Finding the Third Proportional to 634.38 and 929.63

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Solution

The third proportional to 634.38 and 929.63 is: 1,362.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.38 : 929.63 = 929.63 : x
  2. Step 2: Convert to fraction form
    634.38/929.63 = 929.63/x
  3. Step 3: Cross multiply
    634.38x = 929.63 × 929.63
  4. Step 4: Simplify right side
    634.38x = 864,202.64
  5. Step 5: Solve for x
    x = 864,202.64/634.38
  6. Step 6: Final answer
    x = 1,362.29

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.