Finding the Fourth Proportional to 252.54, 378.68 and 130.68
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Solution
The fourth proportional to 252.54, 378.68 and 130.68 is: 195.95
Step by Step Solution
- Step 1: Write the proportion equation
252.54 : 378.68 = 130.68 : x - Step 2: Convert to fraction form
252.54/378.68 = 130.68/x - Step 3: Cross multiply
252.54x = 378.68 × 130.68 - Step 4: Simplify right side
252.54x = 49,485.25 - Step 5: Solve for x
x = 49,485.25/252.54 - Step 6: Final answer
x = 195.95
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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.