Finding the Fourth Proportional to 382.79, 573.99 and 187.70
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Solution
The fourth proportional to 382.79, 573.99 and 187.70 is: 281.45
Step by Step Solution
- Step 1: Write the proportion equation
382.79 : 573.99 = 187.70 : x - Step 2: Convert to fraction form
382.79/573.99 = 187.70/x - Step 3: Cross multiply
382.79x = 573.99 × 187.70 - Step 4: Simplify right side
382.79x = 107,735.05 - Step 5: Solve for x
x = 107,735.05/382.79 - Step 6: Final answer
x = 281.45
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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.