Finding the Fourth Proportional to 394.20, 545.18 and 344.99
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Solution
The fourth proportional to 394.20, 545.18 and 344.99 is: 477.12
Step by Step Solution
- Step 1: Write the proportion equation
394.20 : 545.18 = 344.99 : x - Step 2: Convert to fraction form
394.20/545.18 = 344.99/x - Step 3: Cross multiply
394.20x = 545.18 × 344.99 - Step 4: Simplify right side
394.20x = 188,081.29 - Step 5: Solve for x
x = 188,081.29/394.20 - Step 6: Final answer
x = 477.12
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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.