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Finding the Fourth Proportional to 850.42, 1,173.42 and 535.86

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Solution

The fourth proportional to 850.42, 1,173.42 and 535.86 is: 739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.42 : 1,173.42 = 535.86 : x
  2. Step 2: Convert to fraction form
    850.42/1,173.42 = 535.86/x
  3. Step 3: Cross multiply
    850.42x = 1,173.42 × 535.86
  4. Step 4: Simplify right side
    850.42x = 628,788.84
  5. Step 5: Solve for x
    x = 628,788.84/850.42
  6. Step 6: Final answer
    x = 739.39

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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.