Finding the Fourth Proportional to 203.76, 305.18 and 122.43
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Solution
The fourth proportional to 203.76, 305.18 and 122.43 is: 183.37
Step by Step Solution
- Step 1: Write the proportion equation
203.76 : 305.18 = 122.43 : x - Step 2: Convert to fraction form
203.76/305.18 = 122.43/x - Step 3: Cross multiply
203.76x = 305.18 × 122.43 - Step 4: Simplify right side
203.76x = 37,364.26 - Step 5: Solve for x
x = 37,364.26/203.76 - Step 6: Final answer
x = 183.37
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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.