Finding the Fourth Proportional to 418.91, 628.26 and 144.99
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Solution
The fourth proportional to 418.91, 628.26 and 144.99 is: 217.45
Step by Step Solution
- Step 1: Write the proportion equation
418.91 : 628.26 = 144.99 : x - Step 2: Convert to fraction form
418.91/628.26 = 144.99/x - Step 3: Cross multiply
418.91x = 628.26 × 144.99 - Step 4: Simplify right side
418.91x = 91,091.42 - Step 5: Solve for x
x = 91,091.42/418.91 - Step 6: Final answer
x = 217.45
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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.