Finding the Fourth Proportional to 131.82, 197.74 and 50.66
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Solution
The fourth proportional to 131.82, 197.74 and 50.66 is: 75.99
Step by Step Solution
- Step 1: Write the proportion equation
131.82 : 197.74 = 50.66 : x - Step 2: Convert to fraction form
131.82/197.74 = 50.66/x - Step 3: Cross multiply
131.82x = 197.74 × 50.66 - Step 4: Simplify right side
131.82x = 10,016.39 - Step 5: Solve for x
x = 10,016.39/131.82 - Step 6: Final answer
x = 75.99
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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.