Finding the Fourth Proportional to 135.38, 202.96 and 91.94
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Solution
The fourth proportional to 135.38, 202.96 and 91.94 is: 137.84
Step by Step Solution
- Step 1: Write the proportion equation
135.38 : 202.96 = 91.94 : x - Step 2: Convert to fraction form
135.38/202.96 = 91.94/x - Step 3: Cross multiply
135.38x = 202.96 × 91.94 - Step 4: Simplify right side
135.38x = 18,660.14 - Step 5: Solve for x
x = 18,660.14/135.38 - Step 6: Final answer
x = 137.84
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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.