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Finding the Fourth Proportional to 850.16, 1,173.52 and 822.80

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Solution

The fourth proportional to 850.16, 1,173.52 and 822.80 is: 1,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.16 : 1,173.52 = 822.80 : x
  2. Step 2: Convert to fraction form
    850.16/1,173.52 = 822.80/x
  3. Step 3: Cross multiply
    850.16x = 1,173.52 × 822.80
  4. Step 4: Simplify right side
    850.16x = 965,572.26
  5. Step 5: Solve for x
    x = 965,572.26/850.16
  6. Step 6: Final answer
    x = 1,135.75

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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.