Finding the Fourth Proportional to 283.61, 391.19 and 274.09
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Solution
The fourth proportional to 283.61, 391.19 and 274.09 is: 378.06
Step by Step Solution
- Step 1: Write the proportion equation
283.61 : 391.19 = 274.09 : x - Step 2: Convert to fraction form
283.61/391.19 = 274.09/x - Step 3: Cross multiply
283.61x = 391.19 × 274.09 - Step 4: Simplify right side
283.61x = 107,221.19 - Step 5: Solve for x
x = 107,221.19/283.61 - Step 6: Final answer
x = 378.06
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.