Finding the Fourth Proportional to 281.99, 422.94 and 108.74
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Solution
The fourth proportional to 281.99, 422.94 and 108.74 is: 163.09
Step by Step Solution
- Step 1: Write the proportion equation
281.99 : 422.94 = 108.74 : x - Step 2: Convert to fraction form
281.99/422.94 = 108.74/x - Step 3: Cross multiply
281.99x = 422.94 × 108.74 - Step 4: Simplify right side
281.99x = 45,990.24 - Step 5: Solve for x
x = 45,990.24/281.99 - Step 6: Final answer
x = 163.09
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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.