Finding the Fourth Proportional to 203.80, 305.36 and 122.60
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Solution
The fourth proportional to 203.80, 305.36 and 122.60 is: 183.70
Step by Step Solution
- Step 1: Write the proportion equation
203.80 : 305.36 = 122.60 : x - Step 2: Convert to fraction form
203.80/305.36 = 122.60/x - Step 3: Cross multiply
203.80x = 305.36 × 122.60 - Step 4: Simplify right side
203.80x = 37,437.14 - Step 5: Solve for x
x = 37,437.14/203.80 - Step 6: Final answer
x = 183.70
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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.