Finding the Fourth Proportional to 16.54, 22.79 and 13.78
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Solution
The fourth proportional to 16.54, 22.79 and 13.78 is: 18.99
Step by Step Solution
- Step 1: Write the proportion equation
16.54 : 22.79 = 13.78 : x - Step 2: Convert to fraction form
16.54/22.79 = 13.78/x - Step 3: Cross multiply
16.54x = 22.79 × 13.78 - Step 4: Simplify right side
16.54x = 314.05 - Step 5: Solve for x
x = 314.05/16.54 - Step 6: Final answer
x = 18.99
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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.