Finding the Fourth Proportional to 201.50, 302.18 and 79.70
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Solution
The fourth proportional to 201.50, 302.18 and 79.70 is: 119.52
Step by Step Solution
- Step 1: Write the proportion equation
201.50 : 302.18 = 79.70 : x - Step 2: Convert to fraction form
201.50/302.18 = 79.70/x - Step 3: Cross multiply
201.50x = 302.18 × 79.70 - Step 4: Simplify right side
201.50x = 24,083.75 - Step 5: Solve for x
x = 24,083.75/201.50 - Step 6: Final answer
x = 119.52
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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.