Finding the Fourth Proportional to 423.26, 634.94 and 115.14
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Solution
The fourth proportional to 423.26, 634.94 and 115.14 is: 172.72
Step by Step Solution
- Step 1: Write the proportion equation
423.26 : 634.94 = 115.14 : x - Step 2: Convert to fraction form
423.26/634.94 = 115.14/x - Step 3: Cross multiply
423.26x = 634.94 × 115.14 - Step 4: Simplify right side
423.26x = 73,106.99 - Step 5: Solve for x
x = 73,106.99/423.26 - Step 6: Final answer
x = 172.72
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.