Finding the Fourth Proportional to 252.35, 378.77 and 130.70
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Solution
The fourth proportional to 252.35, 378.77 and 130.70 is: 196.18
Step by Step Solution
- Step 1: Write the proportion equation
252.35 : 378.77 = 130.70 : x - Step 2: Convert to fraction form
252.35/378.77 = 130.70/x - Step 3: Cross multiply
252.35x = 378.77 × 130.70 - Step 4: Simplify right side
252.35x = 49,505.24 - Step 5: Solve for x
x = 49,505.24/252.35 - Step 6: Final answer
x = 196.18
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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.