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Finding the Fourth Proportional to 1,029.41, 1,422.16 and 794.31

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Solution

The fourth proportional to 1,029.41, 1,422.16 and 794.31 is: 1,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.41 : 1,422.16 = 794.31 : x
  2. Step 2: Convert to fraction form
    1,029.41/1,422.16 = 794.31/x
  3. Step 3: Cross multiply
    1,029.41x = 1,422.16 × 794.31
  4. Step 4: Simplify right side
    1,029.41x = 1,129,628.59
  5. Step 5: Solve for x
    x = 1,129,628.59/1,029.41
  6. Step 6: Final answer
    x = 1,097.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.