Finding the Fourth Proportional to 279.44, 385.93 and 226.99
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Solution
The fourth proportional to 279.44, 385.93 and 226.99 is: 313.49
Step by Step Solution
- Step 1: Write the proportion equation
279.44 : 385.93 = 226.99 : x - Step 2: Convert to fraction form
279.44/385.93 = 226.99/x - Step 3: Cross multiply
279.44x = 385.93 × 226.99 - Step 4: Simplify right side
279.44x = 87,602.25 - Step 5: Solve for x
x = 87,602.25/279.44 - Step 6: Final answer
x = 313.49
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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.