Finding the Fourth Proportional to 382.44, 573.76 and 135.70
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Solution
The fourth proportional to 382.44, 573.76 and 135.70 is: 203.59
Step by Step Solution
- Step 1: Write the proportion equation
382.44 : 573.76 = 135.70 : x - Step 2: Convert to fraction form
382.44/573.76 = 135.70/x - Step 3: Cross multiply
382.44x = 573.76 × 135.70 - Step 4: Simplify right side
382.44x = 77,859.23 - Step 5: Solve for x
x = 77,859.23/382.44 - Step 6: Final answer
x = 203.59
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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.