Finding the Fourth Proportional to 400.80, 553.36 and 303
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Solution
The fourth proportional to 400.80, 553.36 and 303 is: 418.33
Step by Step Solution
- Step 1: Write the proportion equation
400.80 : 553.36 = 303 : x - Step 2: Convert to fraction form
400.80/553.36 = 303/x - Step 3: Cross multiply
400.80x = 553.36 × 303 - Step 4: Simplify right side
400.80x = 167,668.08 - Step 5: Solve for x
x = 167,668.08/400.80 - Step 6: Final answer
x = 418.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.