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Finding the Fourth Proportional to 1,291.03, 1,767.98 and 1,283.47

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Solution

The fourth proportional to 1,291.03, 1,767.98 and 1,283.47 is: 1,757.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.03 : 1,767.98 = 1,283.47 : x
  2. Step 2: Convert to fraction form
    1,291.03/1,767.98 = 1,283.47/x
  3. Step 3: Cross multiply
    1,291.03x = 1,767.98 × 1,283.47
  4. Step 4: Simplify right side
    1,291.03x = 2,269,149.29
  5. Step 5: Solve for x
    x = 2,269,149.29/1,291.03
  6. Step 6: Final answer
    x = 1,757.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.