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Finding the Third Proportional to 946.50 and 1,809

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Solution

The third proportional to 946.50 and 1,809 is: 3,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.50 : 1,809 = 1,809 : x
  2. Step 2: Convert to fraction form
    946.50/1,809 = 1,809/x
  3. Step 3: Cross multiply
    946.50x = 1,809 × 1,809
  4. Step 4: Simplify right side
    946.50x = 3,272,481
  5. Step 5: Solve for x
    x = 3,272,481/946.50
  6. Step 6: Final answer
    x = 3,457.45

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.