Finding the Fourth Proportional to 203.21, 304.79 and 79.84
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Solution
The fourth proportional to 203.21, 304.79 and 79.84 is: 119.75
Step by Step Solution
- Step 1: Write the proportion equation
203.21 : 304.79 = 79.84 : x - Step 2: Convert to fraction form
203.21/304.79 = 79.84/x - Step 3: Cross multiply
203.21x = 304.79 × 79.84 - Step 4: Simplify right side
203.21x = 24,334.43 - Step 5: Solve for x
x = 24,334.43/203.21 - Step 6: Final answer
x = 119.75
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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.