Finding the Fourth Proportional to 40.28, 55.54 and 27.99
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Solution
The fourth proportional to 40.28, 55.54 and 27.99 is: 38.60
Step by Step Solution
- Step 1: Write the proportion equation
40.28 : 55.54 = 27.99 : x - Step 2: Convert to fraction form
40.28/55.54 = 27.99/x - Step 3: Cross multiply
40.28x = 55.54 × 27.99 - Step 4: Simplify right side
40.28x = 1,554.49 - Step 5: Solve for x
x = 1,554.49/40.28 - Step 6: Final answer
x = 38.60
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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.