Finding the Fourth Proportional to 38.93, 53.72 and 23.18
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Solution
The fourth proportional to 38.93, 53.72 and 23.18 is: 31.99
Step by Step Solution
- Step 1: Write the proportion equation
38.93 : 53.72 = 23.18 : x - Step 2: Convert to fraction form
38.93/53.72 = 23.18/x - Step 3: Cross multiply
38.93x = 53.72 × 23.18 - Step 4: Simplify right side
38.93x = 1,245.02 - Step 5: Solve for x
x = 1,245.02/38.93 - Step 6: Final answer
x = 31.99
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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.