Finding the Fourth Proportional to 306.75, 423.45 and 201.99
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Solution
The fourth proportional to 306.75, 423.45 and 201.99 is: 278.84
Step by Step Solution
- Step 1: Write the proportion equation
306.75 : 423.45 = 201.99 : x - Step 2: Convert to fraction form
306.75/423.45 = 201.99/x - Step 3: Cross multiply
306.75x = 423.45 × 201.99 - Step 4: Simplify right side
306.75x = 85,532.67 - Step 5: Solve for x
x = 85,532.67/306.75 - Step 6: Final answer
x = 278.84
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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.