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Finding the Fourth Proportional to 1,193.96, 1,647.78 and 696.44

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Solution

The fourth proportional to 1,193.96, 1,647.78 and 696.44 is: 961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.96 : 1,647.78 = 696.44 : x
  2. Step 2: Convert to fraction form
    1,193.96/1,647.78 = 696.44/x
  3. Step 3: Cross multiply
    1,193.96x = 1,647.78 × 696.44
  4. Step 4: Simplify right side
    1,193.96x = 1,147,579.90
  5. Step 5: Solve for x
    x = 1,147,579.90/1,193.96
  6. Step 6: Final answer
    x = 961.15

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Half scale
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Double scale
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1.5x scale

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.