Finding the Fourth Proportional to 68.21, 102.30 and 33.99
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Solution
The fourth proportional to 68.21, 102.30 and 33.99 is: 50.97
Step by Step Solution
- Step 1: Write the proportion equation
68.21 : 102.30 = 33.99 : x - Step 2: Convert to fraction form
68.21/102.30 = 33.99/x - Step 3: Cross multiply
68.21x = 102.30 × 33.99 - Step 4: Simplify right side
68.21x = 3,476.67 - Step 5: Solve for x
x = 3,476.67/68.21 - Step 6: Final answer
x = 50.97
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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.