Finding the Fourth Proportional to 38.93, 53.69 and 27.99
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Solution
The fourth proportional to 38.93, 53.69 and 27.99 is: 38.60
Step by Step Solution
- Step 1: Write the proportion equation
38.93 : 53.69 = 27.99 : x - Step 2: Convert to fraction form
38.93/53.69 = 27.99/x - Step 3: Cross multiply
38.93x = 53.69 × 27.99 - Step 4: Simplify right side
38.93x = 1,502.64 - Step 5: Solve for x
x = 1,502.64/38.93 - Step 6: Final answer
x = 38.60
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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.