Finding the Fourth Proportional to 135.09, 201.55 and 115.60
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Solution
The fourth proportional to 135.09, 201.55 and 115.60 is: 172.47
Step by Step Solution
- Step 1: Write the proportion equation
135.09 : 201.55 = 115.60 : x - Step 2: Convert to fraction form
135.09/201.55 = 115.60/x - Step 3: Cross multiply
135.09x = 201.55 × 115.60 - Step 4: Simplify right side
135.09x = 23,299.18 - Step 5: Solve for x
x = 23,299.18/135.09 - Step 6: Final answer
x = 172.47
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.