Finding the Fourth Proportional to 207.85, 311.00 and 130.19
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Solution
The fourth proportional to 207.85, 311.00 and 130.19 is: 194.80
Step by Step Solution
- Step 1: Write the proportion equation
207.85 : 311.00 = 130.19 : x - Step 2: Convert to fraction form
207.85/311.00 = 130.19/x - Step 3: Cross multiply
207.85x = 311.00 × 130.19 - Step 4: Simplify right side
207.85x = 40,487.99 - Step 5: Solve for x
x = 40,487.99/207.85 - Step 6: Final answer
x = 194.80
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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.