Finding the Fourth Proportional to 328.35, 491.91 and 190.99
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Solution
The fourth proportional to 328.35, 491.91 and 190.99 is: 286.12
Step by Step Solution
- Step 1: Write the proportion equation
328.35 : 491.91 = 190.99 : x - Step 2: Convert to fraction form
328.35/491.91 = 190.99/x - Step 3: Cross multiply
328.35x = 491.91 × 190.99 - Step 4: Simplify right side
328.35x = 93,949.79 - Step 5: Solve for x
x = 93,949.79/328.35 - Step 6: Final answer
x = 286.12
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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.