Finding the Fourth Proportional to 67.29, 92.54 and 54.99
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Solution
The fourth proportional to 67.29, 92.54 and 54.99 is: 75.62
Step by Step Solution
- Step 1: Write the proportion equation
67.29 : 92.54 = 54.99 : x - Step 2: Convert to fraction form
67.29/92.54 = 54.99/x - Step 3: Cross multiply
67.29x = 92.54 × 54.99 - Step 4: Simplify right side
67.29x = 5,088.50 - Step 5: Solve for x
x = 5,088.50/67.29 - Step 6: Final answer
x = 75.62
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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.