Finding the Fourth Proportional to 207.99, 311.99 and 116.78
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Solution
The fourth proportional to 207.99, 311.99 and 116.78 is: 175.16
Step by Step Solution
- Step 1: Write the proportion equation
207.99 : 311.99 = 116.78 : x - Step 2: Convert to fraction form
207.99/311.99 = 116.78/x - Step 3: Cross multiply
207.99x = 311.99 × 116.78 - Step 4: Simplify right side
207.99x = 36,432.05 - Step 5: Solve for x
x = 36,432.05/207.99 - Step 6: Final answer
x = 175.16
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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.