Finding the Fourth Proportional to 382.44, 573.65 and 138.97
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Solution
The fourth proportional to 382.44, 573.65 and 138.97 is: 208.45
Step by Step Solution
- Step 1: Write the proportion equation
382.44 : 573.65 = 138.97 : x - Step 2: Convert to fraction form
382.44/573.65 = 138.97/x - Step 3: Cross multiply
382.44x = 573.65 × 138.97 - Step 4: Simplify right side
382.44x = 79,720.14 - Step 5: Solve for x
x = 79,720.14/382.44 - Step 6: Final answer
x = 208.45
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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.