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Finding the Fourth Proportional to 1,708.49, 2,563.45 and 612.97

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Solution

The fourth proportional to 1,708.49, 2,563.45 and 612.97 is: 919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.49 : 2,563.45 = 612.97 : x
  2. Step 2: Convert to fraction form
    1,708.49/2,563.45 = 612.97/x
  3. Step 3: Cross multiply
    1,708.49x = 2,563.45 × 612.97
  4. Step 4: Simplify right side
    1,708.49x = 1,571,310.01
  5. Step 5: Solve for x
    x = 1,571,310.01/1,708.49
  6. Step 6: Final answer
    x = 919.71

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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.