Finding the Fourth Proportional to 201.60, 286.40 and 201.60
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Solution
The fourth proportional to 201.60, 286.40 and 201.60 is: 286.40
Step by Step Solution
- Step 1: Write the proportion equation
201.60 : 286.40 = 201.60 : x - Step 2: Convert to fraction form
201.60/286.40 = 201.60/x - Step 3: Cross multiply
201.60x = 286.40 × 201.60 - Step 4: Simplify right side
201.60x = 57,738.24 - Step 5: Solve for x
x = 57,738.24/201.60 - Step 6: Final answer
x = 286.40
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Why These Related Problems?
These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.