Finding the Fourth Proportional to 229.15, 343.74 and 84.88
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Solution
The fourth proportional to 229.15, 343.74 and 84.88 is: 127.33
Step by Step Solution
- Step 1: Write the proportion equation
229.15 : 343.74 = 84.88 : x - Step 2: Convert to fraction form
229.15/343.74 = 84.88/x - Step 3: Cross multiply
229.15x = 343.74 × 84.88 - Step 4: Simplify right side
229.15x = 29,176.65 - Step 5: Solve for x
x = 29,176.65/229.15 - Step 6: Final answer
x = 127.33
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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.