Finding the Fourth Proportional to 57.81, 86.18 and 50.82
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Solution
The fourth proportional to 57.81, 86.18 and 50.82 is: 75.76
Step by Step Solution
- Step 1: Write the proportion equation
57.81 : 86.18 = 50.82 : x - Step 2: Convert to fraction form
57.81/86.18 = 50.82/x - Step 3: Cross multiply
57.81x = 86.18 × 50.82 - Step 4: Simplify right side
57.81x = 4,379.41 - Step 5: Solve for x
x = 4,379.41/57.81 - Step 6: Final answer
x = 75.76
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.