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Finding the Fourth Proportional to 716.55, 1,074.83 and 196.56

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Solution

The fourth proportional to 716.55, 1,074.83 and 196.56 is: 294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.55 : 1,074.83 = 196.56 : x
  2. Step 2: Convert to fraction form
    716.55/1,074.83 = 196.56/x
  3. Step 3: Cross multiply
    716.55x = 1,074.83 × 196.56
  4. Step 4: Simplify right side
    716.55x = 211,268.58
  5. Step 5: Solve for x
    x = 211,268.58/716.55
  6. Step 6: Final answer
    x = 294.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.