Finding the Fourth Proportional to 283.95, 426.21 and 121.68
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Solution
The fourth proportional to 283.95, 426.21 and 121.68 is: 182.64
Step by Step Solution
- Step 1: Write the proportion equation
283.95 : 426.21 = 121.68 : x - Step 2: Convert to fraction form
283.95/426.21 = 121.68/x - Step 3: Cross multiply
283.95x = 426.21 × 121.68 - Step 4: Simplify right side
283.95x = 51,861.23 - Step 5: Solve for x
x = 51,861.23/283.95 - Step 6: Final answer
x = 182.64
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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.