Finding the Fourth Proportional to 843.21, 1,163.65 and 528.44
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Solution
The fourth proportional to 843.21, 1,163.65 and 528.44 is: 729.26
Step by Step Solution
- Step 1: Write the proportion equation
843.21 : 1,163.65 = 528.44 : x - Step 2: Convert to fraction form
843.21/1,163.65 = 528.44/x - Step 3: Cross multiply
843.21x = 1,163.65 × 528.44 - Step 4: Simplify right side
843.21x = 614,919.21 - Step 5: Solve for x
x = 614,919.21/843.21 - Step 6: Final answer
x = 729.26
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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.