Finding the Fourth Proportional to 38.36, 57.45 and 30.71
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Solution
The fourth proportional to 38.36, 57.45 and 30.71 is: 45.99
Step by Step Solution
- Step 1: Write the proportion equation
38.36 : 57.45 = 30.71 : x - Step 2: Convert to fraction form
38.36/57.45 = 30.71/x - Step 3: Cross multiply
38.36x = 57.45 × 30.71 - Step 4: Simplify right side
38.36x = 1,764.00 - Step 5: Solve for x
x = 1,764.00/38.36 - Step 6: Final answer
x = 45.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.