Finding the Fourth Proportional to 422.97, 634.26 and 191.97
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Solution
The fourth proportional to 422.97, 634.26 and 191.97 is: 287.86
Step by Step Solution
- Step 1: Write the proportion equation
422.97 : 634.26 = 191.97 : x - Step 2: Convert to fraction form
422.97/634.26 = 191.97/x - Step 3: Cross multiply
422.97x = 634.26 × 191.97 - Step 4: Simplify right side
422.97x = 121,757.99 - Step 5: Solve for x
x = 121,757.99/422.97 - Step 6: Final answer
x = 287.86
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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.