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Finding the Third Proportional to 603.70 and 1,386.81

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Solution

The third proportional to 603.70 and 1,386.81 is: 3,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.70 : 1,386.81 = 1,386.81 : x
  2. Step 2: Convert to fraction form
    603.70/1,386.81 = 1,386.81/x
  3. Step 3: Cross multiply
    603.70x = 1,386.81 × 1,386.81
  4. Step 4: Simplify right side
    603.70x = 1,923,238.08
  5. Step 5: Solve for x
    x = 1,923,238.08/603.70
  6. Step 6: Final answer
    x = 3,185.73

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.