Finding the Fourth Proportional to 80.20, 120.27 and 32.09
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Solution
The fourth proportional to 80.20, 120.27 and 32.09 is: 48.12
Step by Step Solution
- Step 1: Write the proportion equation
80.20 : 120.27 = 32.09 : x - Step 2: Convert to fraction form
80.20/120.27 = 32.09/x - Step 3: Cross multiply
80.20x = 120.27 × 32.09 - Step 4: Simplify right side
80.20x = 3,859.46 - Step 5: Solve for x
x = 3,859.46/80.20 - Step 6: Final answer
x = 48.12
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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.