Finding the Fourth Proportional to 67.20, 92.71 and 41.31
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Solution
The fourth proportional to 67.20, 92.71 and 41.31 is: 56.99
Step by Step Solution
- Step 1: Write the proportion equation
67.20 : 92.71 = 41.31 : x - Step 2: Convert to fraction form
67.20/92.71 = 41.31/x - Step 3: Cross multiply
67.20x = 92.71 × 41.31 - Step 4: Simplify right side
67.20x = 3,829.85 - Step 5: Solve for x
x = 3,829.85/67.20 - Step 6: Final answer
x = 56.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.