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Finding the Fourth Proportional to 855.98, 1,181.95 and 541.75

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Solution

The fourth proportional to 855.98, 1,181.95 and 541.75 is: 748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    855.98 : 1,181.95 = 541.75 : x
  2. Step 2: Convert to fraction form
    855.98/1,181.95 = 541.75/x
  3. Step 3: Cross multiply
    855.98x = 1,181.95 × 541.75
  4. Step 4: Simplify right side
    855.98x = 640,321.41
  5. Step 5: Solve for x
    x = 640,321.41/855.98
  6. Step 6: Final answer
    x = 748.06

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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.