Finding the Fourth Proportional to 216.26, 324.29 and 71.99
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Solution
The fourth proportional to 216.26, 324.29 and 71.99 is: 107.95
Step by Step Solution
- Step 1: Write the proportion equation
216.26 : 324.29 = 71.99 : x - Step 2: Convert to fraction form
216.26/324.29 = 71.99/x - Step 3: Cross multiply
216.26x = 324.29 × 71.99 - Step 4: Simplify right side
216.26x = 23,344.02 - Step 5: Solve for x
x = 23,344.02/216.26 - Step 6: Final answer
x = 107.95
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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.