Finding the Fourth Proportional to 100.14, 150.20 and 28.00
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Solution
The fourth proportional to 100.14, 150.20 and 28.00 is: 41.99
Step by Step Solution
- Step 1: Write the proportion equation
100.14 : 150.20 = 28.00 : x - Step 2: Convert to fraction form
100.14/150.20 = 28.00/x - Step 3: Cross multiply
100.14x = 150.20 × 28.00 - Step 4: Simplify right side
100.14x = 4,204.85 - Step 5: Solve for x
x = 4,204.85/100.14 - Step 6: Final answer
x = 41.99
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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.