Finding the Fourth Proportional to 816.99, 1,226.36 and 330.36
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Solution
The fourth proportional to 816.99, 1,226.36 and 330.36 is: 495.89
Step by Step Solution
- Step 1: Write the proportion equation
816.99 : 1,226.36 = 330.36 : x - Step 2: Convert to fraction form
816.99/1,226.36 = 330.36/x - Step 3: Cross multiply
816.99x = 1,226.36 × 330.36 - Step 4: Simplify right side
816.99x = 405,140.29 - Step 5: Solve for x
x = 405,140.29/816.99 - Step 6: Final answer
x = 495.89
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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.