Finding the Fourth Proportional to 229.31, 343.91 and 84.99
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Solution
The fourth proportional to 229.31, 343.91 and 84.99 is: 127.47
Step by Step Solution
- Step 1: Write the proportion equation
229.31 : 343.91 = 84.99 : x - Step 2: Convert to fraction form
229.31/343.91 = 84.99/x - Step 3: Cross multiply
229.31x = 343.91 × 84.99 - Step 4: Simplify right side
229.31x = 29,229.12 - Step 5: Solve for x
x = 29,229.12/229.31 - 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.