Finding the Fourth Proportional to 394.26, 543.62 and 331.99
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Solution
The fourth proportional to 394.26, 543.62 and 331.99 is: 457.76
Step by Step Solution
- Step 1: Write the proportion equation
394.26 : 543.62 = 331.99 : x - Step 2: Convert to fraction form
394.26/543.62 = 331.99/x - Step 3: Cross multiply
394.26x = 543.62 × 331.99 - Step 4: Simplify right side
394.26x = 180,476.40 - Step 5: Solve for x
x = 180,476.40/394.26 - Step 6: Final answer
x = 457.76
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.