Finding the Fourth Proportional to 251.28, 377.09 and 129.63
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Solution
The fourth proportional to 251.28, 377.09 and 129.63 is: 194.53
Step by Step Solution
- Step 1: Write the proportion equation
251.28 : 377.09 = 129.63 : x - Step 2: Convert to fraction form
251.28/377.09 = 129.63/x - Step 3: Cross multiply
251.28x = 377.09 × 129.63 - Step 4: Simplify right side
251.28x = 48,879.97 - Step 5: Solve for x
x = 48,879.97/251.28 - Step 6: Final answer
x = 194.53
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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.