Finding the Fourth Proportional to 396.92, 547.70 and 231.19
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Solution
The fourth proportional to 396.92, 547.70 and 231.19 is: 319.00
Step by Step Solution
- Step 1: Write the proportion equation
396.92 : 547.70 = 231.19 : x - Step 2: Convert to fraction form
396.92/547.70 = 231.19/x - Step 3: Cross multiply
396.92x = 547.70 × 231.19 - Step 4: Simplify right side
396.92x = 126,620.24 - Step 5: Solve for x
x = 126,620.24/396.92 - Step 6: Final answer
x = 319.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.