Finding the Fourth Proportional to 214.67, 321.99 and 84.63
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Solution
The fourth proportional to 214.67, 321.99 and 84.63 is: 126.94
Step by Step Solution
- Step 1: Write the proportion equation
214.67 : 321.99 = 84.63 : x - Step 2: Convert to fraction form
214.67/321.99 = 84.63/x - Step 3: Cross multiply
214.67x = 321.99 × 84.63 - Step 4: Simplify right side
214.67x = 27,249.57 - Step 5: Solve for x
x = 27,249.57/214.67 - Step 6: Final answer
x = 126.94
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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.