Finding the Fourth Proportional to 135.05, 201.41 and 122.09
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Solution
The fourth proportional to 135.05, 201.41 and 122.09 is: 182.08
Step by Step Solution
- Step 1: Write the proportion equation
135.05 : 201.41 = 122.09 : x - Step 2: Convert to fraction form
135.05/201.41 = 122.09/x - Step 3: Cross multiply
135.05x = 201.41 × 122.09 - Step 4: Simplify right side
135.05x = 24,590.15 - Step 5: Solve for x
x = 24,590.15/135.05 - Step 6: Final answer
x = 182.08
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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.