Finding the Fourth Proportional to 214.92, 324.68 and 212.90
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Solution
The fourth proportional to 214.92, 324.68 and 212.90 is: 321.62
Step by Step Solution
- Step 1: Write the proportion equation
214.92 : 324.68 = 212.90 : x - Step 2: Convert to fraction form
214.92/324.68 = 212.90/x - Step 3: Cross multiply
214.92x = 324.68 × 212.90 - Step 4: Simplify right side
214.92x = 69,121.68 - Step 5: Solve for x
x = 69,121.68/214.92 - Step 6: Final answer
x = 321.62
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.