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Finding the Third Proportional to 483.19 and 690.33

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Solution

The third proportional to 483.19 and 690.33 is: 986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.19 : 690.33 = 690.33 : x
  2. Step 2: Convert to fraction form
    483.19/690.33 = 690.33/x
  3. Step 3: Cross multiply
    483.19x = 690.33 × 690.33
  4. Step 4: Simplify right side
    483.19x = 476,552.92
  5. Step 5: Solve for x
    x = 476,552.92/483.19
  6. Step 6: Final answer
    x = 986.27

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.