Finding the Fourth Proportional to 423.09, 634.62 and 114.99
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Solution
The fourth proportional to 423.09, 634.62 and 114.99 is: 172.48
Step by Step Solution
- Step 1: Write the proportion equation
423.09 : 634.62 = 114.99 : x - Step 2: Convert to fraction form
423.09/634.62 = 114.99/x - Step 3: Cross multiply
423.09x = 634.62 × 114.99 - Step 4: Simplify right side
423.09x = 72,974.95 - Step 5: Solve for x
x = 72,974.95/423.09 - Step 6: Final answer
x = 172.48
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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.