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Finding the Third Proportional to 299.53 and 637.31

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Solution

The third proportional to 299.53 and 637.31 is: 1,356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.53 : 637.31 = 637.31 : x
  2. Step 2: Convert to fraction form
    299.53/637.31 = 637.31/x
  3. Step 3: Cross multiply
    299.53x = 637.31 × 637.31
  4. Step 4: Simplify right side
    299.53x = 406,167.22
  5. Step 5: Solve for x
    x = 406,167.22/299.53
  6. Step 6: Final answer
    x = 1,356.01

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.