Finding the Fourth Proportional to 283.79, 391.80 and 201.07
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Solution
The fourth proportional to 283.79, 391.80 and 201.07 is: 277.60
Step by Step Solution
- Step 1: Write the proportion equation
283.79 : 391.80 = 201.07 : x - Step 2: Convert to fraction form
283.79/391.80 = 201.07/x - Step 3: Cross multiply
283.79x = 391.80 × 201.07 - Step 4: Simplify right side
283.79x = 78,779.23 - Step 5: Solve for x
x = 78,779.23/283.79 - Step 6: Final answer
x = 277.60
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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.