Finding the Fourth Proportional to 229.11, 343.68 and 74.99
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Solution
The fourth proportional to 229.11, 343.68 and 74.99 is: 112.48
Step by Step Solution
- Step 1: Write the proportion equation
229.11 : 343.68 = 74.99 : x - Step 2: Convert to fraction form
229.11/343.68 = 74.99/x - Step 3: Cross multiply
229.11x = 343.68 × 74.99 - Step 4: Simplify right side
229.11x = 25,770.84 - Step 5: Solve for x
x = 25,770.84/229.11 - Step 6: Final answer
x = 112.48
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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.