Finding the Fourth Proportional to 57.67, 86.71 and 40.62
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Solution
The fourth proportional to 57.67, 86.71 and 40.62 is: 61.07
Step by Step Solution
- Step 1: Write the proportion equation
57.67 : 86.71 = 40.62 : x - Step 2: Convert to fraction form
57.67/86.71 = 40.62/x - Step 3: Cross multiply
57.67x = 86.71 × 40.62 - Step 4: Simplify right side
57.67x = 3,522.16 - Step 5: Solve for x
x = 3,522.16/57.67 - Step 6: Final answer
x = 61.07
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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.