Finding the Fourth Proportional to 38.38, 57.90 and 37.99
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Solution
The fourth proportional to 38.38, 57.90 and 37.99 is: 57.32
Step by Step Solution
- Step 1: Write the proportion equation
38.38 : 57.90 = 37.99 : x - Step 2: Convert to fraction form
38.38/57.90 = 37.99/x - Step 3: Cross multiply
38.38x = 57.90 × 37.99 - Step 4: Simplify right side
38.38x = 2,199.90 - Step 5: Solve for x
x = 2,199.90/38.38 - Step 6: Final answer
x = 57.32
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.