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Finding the Third Proportional to 630.28 and 920.11

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Solution

The third proportional to 630.28 and 920.11 is: 1,343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.28 : 920.11 = 920.11 : x
  2. Step 2: Convert to fraction form
    630.28/920.11 = 920.11/x
  3. Step 3: Cross multiply
    630.28x = 920.11 × 920.11
  4. Step 4: Simplify right side
    630.28x = 846,601.26
  5. Step 5: Solve for x
    x = 846,601.26/630.28
  6. Step 6: Final answer
    x = 1,343.21

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.