Finding the Fourth Proportional to 247.15, 370.68 and 84.80
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Solution
The fourth proportional to 247.15, 370.68 and 84.80 is: 127.18
Step by Step Solution
- Step 1: Write the proportion equation
247.15 : 370.68 = 84.80 : x - Step 2: Convert to fraction form
247.15/370.68 = 84.80/x - Step 3: Cross multiply
247.15x = 370.68 × 84.80 - Step 4: Simplify right side
247.15x = 31,432.19 - Step 5: Solve for x
x = 31,432.19/247.15 - Step 6: Final answer
x = 127.18
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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.