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Finding the Fourth Proportional to 1,155.39, 1,733.39 and 850.89

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Solution

The fourth proportional to 1,155.39, 1,733.39 and 850.89 is: 1,276.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.39 : 1,733.39 = 850.89 : x
  2. Step 2: Convert to fraction form
    1,155.39/1,733.39 = 850.89/x
  3. Step 3: Cross multiply
    1,155.39x = 1,733.39 × 850.89
  4. Step 4: Simplify right side
    1,155.39x = 1,474,924.22
  5. Step 5: Solve for x
    x = 1,474,924.22/1,155.39
  6. Step 6: Final answer
    x = 1,276.56

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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.