Finding the Fourth Proportional to 134.38, 201.36 and 80.32
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Solution
The fourth proportional to 134.38, 201.36 and 80.32 is: 120.35
Step by Step Solution
- Step 1: Write the proportion equation
134.38 : 201.36 = 80.32 : x - Step 2: Convert to fraction form
134.38/201.36 = 80.32/x - Step 3: Cross multiply
134.38x = 201.36 × 80.32 - Step 4: Simplify right side
134.38x = 16,173.24 - Step 5: Solve for x
x = 16,173.24/134.38 - Step 6: Final answer
x = 120.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.