Finding the Fourth Proportional to 207.99, 311.69 and 122.31
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Solution
The fourth proportional to 207.99, 311.69 and 122.31 is: 183.29
Step by Step Solution
- Step 1: Write the proportion equation
207.99 : 311.69 = 122.31 : x - Step 2: Convert to fraction form
207.99/311.69 = 122.31/x - Step 3: Cross multiply
207.99x = 311.69 × 122.31 - Step 4: Simplify right side
207.99x = 38,122.19 - Step 5: Solve for x
x = 38,122.19/207.99 - Step 6: Final answer
x = 183.29
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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.