Finding the Fourth Proportional to 247.50, 371.25 and 76.50
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Solution
The fourth proportional to 247.50, 371.25 and 76.50 is: 114.75
Step by Step Solution
- Step 1: Write the proportion equation
247.50 : 371.25 = 76.50 : x - Step 2: Convert to fraction form
247.50/371.25 = 76.50/x - Step 3: Cross multiply
247.50x = 371.25 × 76.50 - Step 4: Simplify right side
247.50x = 28,400.63 - Step 5: Solve for x
x = 28,400.63/247.50 - Step 6: Final answer
x = 114.75
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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.