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Finding the Third Proportional to 209.50 and 433.75

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Solution

The third proportional to 209.50 and 433.75 is: 898.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.50 : 433.75 = 433.75 : x
  2. Step 2: Convert to fraction form
    209.50/433.75 = 433.75/x
  3. Step 3: Cross multiply
    209.50x = 433.75 × 433.75
  4. Step 4: Simplify right side
    209.50x = 188,139.06
  5. Step 5: Solve for x
    x = 188,139.06/209.50
  6. Step 6: Final answer
    x = 898.04

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.