Finding the Fourth Proportional to 400.94, 553.29 and 223.91
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Solution
The fourth proportional to 400.94, 553.29 and 223.91 is: 308.99
Step by Step Solution
- Step 1: Write the proportion equation
400.94 : 553.29 = 223.91 : x - Step 2: Convert to fraction form
400.94/553.29 = 223.91/x - Step 3: Cross multiply
400.94x = 553.29 × 223.91 - Step 4: Simplify right side
400.94x = 123,886.89 - Step 5: Solve for x
x = 123,886.89/400.94 - Step 6: Final answer
x = 308.99
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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.