Finding the Fourth Proportional to 251.26, 376.95 and 129.70
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Solution
The fourth proportional to 251.26, 376.95 and 129.70 is: 194.58
Step by Step Solution
- Step 1: Write the proportion equation
251.26 : 376.95 = 129.70 : x - Step 2: Convert to fraction form
251.26/376.95 = 129.70/x - Step 3: Cross multiply
251.26x = 376.95 × 129.70 - Step 4: Simplify right side
251.26x = 48,890.42 - Step 5: Solve for x
x = 48,890.42/251.26 - Step 6: Final answer
x = 194.58
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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.