Finding the Fourth Proportional to 214.26, 321.38 and 69.99
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Solution
The fourth proportional to 214.26, 321.38 and 69.99 is: 104.98
Step by Step Solution
- Step 1: Write the proportion equation
214.26 : 321.38 = 69.99 : x - Step 2: Convert to fraction form
214.26/321.38 = 69.99/x - Step 3: Cross multiply
214.26x = 321.38 × 69.99 - Step 4: Simplify right side
214.26x = 22,493.39 - Step 5: Solve for x
x = 22,493.39/214.26 - Step 6: Final answer
x = 104.98
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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.