Finding the Fourth Proportional to 247.35, 370.79 and 84.99
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Solution
The fourth proportional to 247.35, 370.79 and 84.99 is: 127.41
Step by Step Solution
- Step 1: Write the proportion equation
247.35 : 370.79 = 84.99 : x - Step 2: Convert to fraction form
247.35/370.79 = 84.99/x - Step 3: Cross multiply
247.35x = 370.79 × 84.99 - Step 4: Simplify right side
247.35x = 31,513.02 - Step 5: Solve for x
x = 31,513.02/247.35 - Step 6: Final answer
x = 127.41
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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.