Finding the Fourth Proportional to 202.44, 279.36 and 136.92
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Solution
The fourth proportional to 202.44, 279.36 and 136.92 is: 188.94
Step by Step Solution
- Step 1: Write the proportion equation
202.44 : 279.36 = 136.92 : x - Step 2: Convert to fraction form
202.44/279.36 = 136.92/x - Step 3: Cross multiply
202.44x = 279.36 × 136.92 - Step 4: Simplify right side
202.44x = 38,249.97 - Step 5: Solve for x
x = 38,249.97/202.44 - Step 6: Final answer
x = 188.94
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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.