Finding the Fourth Proportional to 135.40, 202.62 and 92.68
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Solution
The fourth proportional to 135.40, 202.62 and 92.68 is: 138.69
Step by Step Solution
- Step 1: Write the proportion equation
135.40 : 202.62 = 92.68 : x - Step 2: Convert to fraction form
135.40/202.62 = 92.68/x - Step 3: Cross multiply
135.40x = 202.62 × 92.68 - Step 4: Simplify right side
135.40x = 18,778.82 - Step 5: Solve for x
x = 18,778.82/135.40 - Step 6: Final answer
x = 138.69
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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.