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Finding the Fourth Proportional to 857.25, 1,182.44 and 573.68

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Solution

The fourth proportional to 857.25, 1,182.44 and 573.68 is: 791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.25 : 1,182.44 = 573.68 : x
  2. Step 2: Convert to fraction form
    857.25/1,182.44 = 573.68/x
  3. Step 3: Cross multiply
    857.25x = 1,182.44 × 573.68
  4. Step 4: Simplify right side
    857.25x = 678,333.40
  5. Step 5: Solve for x
    x = 678,333.40/857.25
  6. Step 6: Final answer
    x = 791.29

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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.