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Finding the Fourth Proportional to 2,169.97, 3,255.49 and 609.97

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Solution

The fourth proportional to 2,169.97, 3,255.49 and 609.97 is: 915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.97 : 3,255.49 = 609.97 : x
  2. Step 2: Convert to fraction form
    2,169.97/3,255.49 = 609.97/x
  3. Step 3: Cross multiply
    2,169.97x = 3,255.49 × 609.97
  4. Step 4: Simplify right side
    2,169.97x = 1,985,751.24
  5. Step 5: Solve for x
    x = 1,985,751.24/2,169.97
  6. Step 6: Final answer
    x = 915.11

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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.