Finding the Fourth Proportional to 216.18, 324.26 and 69.92
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Solution
The fourth proportional to 216.18, 324.26 and 69.92 is: 104.88
Step by Step Solution
- Step 1: Write the proportion equation
216.18 : 324.26 = 69.92 : x - Step 2: Convert to fraction form
216.18/324.26 = 69.92/x - Step 3: Cross multiply
216.18x = 324.26 × 69.92 - Step 4: Simplify right side
216.18x = 22,673.24 - Step 5: Solve for x
x = 22,673.24/216.18 - Step 6: Final answer
x = 104.88
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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.