Finding the Fourth Proportional to 38.91, 53.62 and 27.97
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Solution
The fourth proportional to 38.91, 53.62 and 27.97 is: 38.54
Step by Step Solution
- Step 1: Write the proportion equation
38.91 : 53.62 = 27.97 : x - Step 2: Convert to fraction form
38.91/53.62 = 27.97/x - Step 3: Cross multiply
38.91x = 53.62 × 27.97 - Step 4: Simplify right side
38.91x = 1,499.75 - Step 5: Solve for x
x = 1,499.75/38.91 - Step 6: Final answer
x = 38.54
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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.