Finding the Fourth Proportional to 38.56, 57.86 and 29.99
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Solution
The fourth proportional to 38.56, 57.86 and 29.99 is: 45.00
Step by Step Solution
- Step 1: Write the proportion equation
38.56 : 57.86 = 29.99 : x - Step 2: Convert to fraction form
38.56/57.86 = 29.99/x - Step 3: Cross multiply
38.56x = 57.86 × 29.99 - Step 4: Simplify right side
38.56x = 1,735.22 - Step 5: Solve for x
x = 1,735.22/38.56 - Step 6: Final answer
x = 45.00
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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.