Finding the Fourth Proportional to 57.36, 86.18 and 46.56
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Solution
The fourth proportional to 57.36, 86.18 and 46.56 is: 69.95
Step by Step Solution
- Step 1: Write the proportion equation
57.36 : 86.18 = 46.56 : x - Step 2: Convert to fraction form
57.36/86.18 = 46.56/x - Step 3: Cross multiply
57.36x = 86.18 × 46.56 - Step 4: Simplify right side
57.36x = 4,012.31 - Step 5: Solve for x
x = 4,012.31/57.36 - Step 6: Final answer
x = 69.95
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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.