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Finding the Fourth Proportional to 1,559.27, 2,336.96 and 779.49

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Solution

The fourth proportional to 1,559.27, 2,336.96 and 779.49 is: 1,168.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.27 : 2,336.96 = 779.49 : x
  2. Step 2: Convert to fraction form
    1,559.27/2,336.96 = 779.49/x
  3. Step 3: Cross multiply
    1,559.27x = 2,336.96 × 779.49
  4. Step 4: Simplify right side
    1,559.27x = 1,821,633.05
  5. Step 5: Solve for x
    x = 1,821,633.05/1,559.27
  6. Step 6: Final answer
    x = 1,168.26

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Double scale
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1.5x scale

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.