Finding the Fourth Proportional to 306.63, 423.09 and 190.26
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Solution
The fourth proportional to 306.63, 423.09 and 190.26 is: 262.52
Step by Step Solution
- Step 1: Write the proportion equation
306.63 : 423.09 = 190.26 : x - Step 2: Convert to fraction form
306.63/423.09 = 190.26/x - Step 3: Cross multiply
306.63x = 423.09 × 190.26 - Step 4: Simplify right side
306.63x = 80,497.10 - Step 5: Solve for x
x = 80,497.10/306.63 - Step 6: Final answer
x = 262.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.