Finding the Fourth Proportional to 67.19, 92.72 and 38.09
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Solution
The fourth proportional to 67.19, 92.72 and 38.09 is: 52.56
Step by Step Solution
- Step 1: Write the proportion equation
67.19 : 92.72 = 38.09 : x - Step 2: Convert to fraction form
67.19/92.72 = 38.09/x - Step 3: Cross multiply
67.19x = 92.72 × 38.09 - Step 4: Simplify right side
67.19x = 3,531.24 - Step 5: Solve for x
x = 3,531.24/67.19 - Step 6: Final answer
x = 52.56
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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.