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Finding the Third Proportional to 455.25 and 919.50

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Solution

The third proportional to 455.25 and 919.50 is: 1,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.25 : 919.50 = 919.50 : x
  2. Step 2: Convert to fraction form
    455.25/919.50 = 919.50/x
  3. Step 3: Cross multiply
    455.25x = 919.50 × 919.50
  4. Step 4: Simplify right side
    455.25x = 845,480.25
  5. Step 5: Solve for x
    x = 845,480.25/455.25
  6. Step 6: Final answer
    x = 1,857.18

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.