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Finding the Fourth Proportional to 1,760.36, 2,638.49 and 664.03

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Solution

The fourth proportional to 1,760.36, 2,638.49 and 664.03 is: 995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.36 : 2,638.49 = 664.03 : x
  2. Step 2: Convert to fraction form
    1,760.36/2,638.49 = 664.03/x
  3. Step 3: Cross multiply
    1,760.36x = 2,638.49 × 664.03
  4. Step 4: Simplify right side
    1,760.36x = 1,752,036.51
  5. Step 5: Solve for x
    x = 1,752,036.51/1,760.36
  6. Step 6: Final answer
    x = 995.27

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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.