Finding the Fourth Proportional to 207.97, 311.92 and 77.95
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Solution
The fourth proportional to 207.97, 311.92 and 77.95 is: 116.90
Step by Step Solution
- Step 1: Write the proportion equation
207.97 : 311.92 = 77.95 : x - Step 2: Convert to fraction form
207.97/311.92 = 77.95/x - Step 3: Cross multiply
207.97x = 311.92 × 77.95 - Step 4: Simplify right side
207.97x = 24,312.21 - Step 5: Solve for x
x = 24,312.21/207.97 - Step 6: Final answer
x = 116.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.