Finding the Fourth Proportional to 229.21, 343.99 and 84.94
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Solution
The fourth proportional to 229.21, 343.99 and 84.94 is: 127.47
Step by Step Solution
- Step 1: Write the proportion equation
229.21 : 343.99 = 84.94 : x - Step 2: Convert to fraction form
229.21/343.99 = 84.94/x - Step 3: Cross multiply
229.21x = 343.99 × 84.94 - Step 4: Simplify right side
229.21x = 29,218.51 - Step 5: Solve for x
x = 29,218.51/229.21 - Step 6: Final answer
x = 127.47
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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.