Finding the Fourth Proportional to 38.77, 53.30 and 34.18
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Solution
The fourth proportional to 38.77, 53.30 and 34.18 is: 46.99
Step by Step Solution
- Step 1: Write the proportion equation
38.77 : 53.30 = 34.18 : x - Step 2: Convert to fraction form
38.77/53.30 = 34.18/x - Step 3: Cross multiply
38.77x = 53.30 × 34.18 - Step 4: Simplify right side
38.77x = 1,821.75 - Step 5: Solve for x
x = 1,821.75/38.77 - Step 6: Final answer
x = 46.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.