Finding the Fourth Proportional to 67.57, 93.24 and 39.94
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Solution
The fourth proportional to 67.57, 93.24 and 39.94 is: 55.12
Step by Step Solution
- Step 1: Write the proportion equation
67.57 : 93.24 = 39.94 : x - Step 2: Convert to fraction form
67.57/93.24 = 39.94/x - Step 3: Cross multiply
67.57x = 93.24 × 39.94 - Step 4: Simplify right side
67.57x = 3,724.10 - Step 5: Solve for x
x = 3,724.10/67.57 - Step 6: Final answer
x = 55.12
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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.