Finding the Fourth Proportional to 135.40, 202.13 and 122.12
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Solution
The fourth proportional to 135.40, 202.13 and 122.12 is: 182.31
Step by Step Solution
- Step 1: Write the proportion equation
135.40 : 202.13 = 122.12 : x - Step 2: Convert to fraction form
135.40/202.13 = 122.12/x - Step 3: Cross multiply
135.40x = 202.13 × 122.12 - Step 4: Simplify right side
135.40x = 24,684.12 - Step 5: Solve for x
x = 24,684.12/135.40 - Step 6: Final answer
x = 182.31
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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.