Finding the Fourth Proportional to 229.05, 343.55 and 84.75
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Solution
The fourth proportional to 229.05, 343.55 and 84.75 is: 127.11
Step by Step Solution
- Step 1: Write the proportion equation
229.05 : 343.55 = 84.75 : x - Step 2: Convert to fraction form
229.05/343.55 = 84.75/x - Step 3: Cross multiply
229.05x = 343.55 × 84.75 - Step 4: Simplify right side
229.05x = 29,115.44 - Step 5: Solve for x
x = 29,115.44/229.05 - Step 6: Final answer
x = 127.11
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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.