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Finding the Third Proportional to 858.94 and 1,289.25

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Solution

The third proportional to 858.94 and 1,289.25 is: 1,935.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.94 : 1,289.25 = 1,289.25 : x
  2. Step 2: Convert to fraction form
    858.94/1,289.25 = 1,289.25/x
  3. Step 3: Cross multiply
    858.94x = 1,289.25 × 1,289.25
  4. Step 4: Simplify right side
    858.94x = 1,662,165.56
  5. Step 5: Solve for x
    x = 1,662,165.56/858.94
  6. Step 6: Final answer
    x = 1,935.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.