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Finding the Third Proportional to 738.75 and 824.25

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Solution

The third proportional to 738.75 and 824.25 is: 919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.75 : 824.25 = 824.25 : x
  2. Step 2: Convert to fraction form
    738.75/824.25 = 824.25/x
  3. Step 3: Cross multiply
    738.75x = 824.25 × 824.25
  4. Step 4: Simplify right side
    738.75x = 679,388.06
  5. Step 5: Solve for x
    x = 679,388.06/738.75
  6. Step 6: Final answer
    x = 919.65

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.