Finding the Fourth Proportional to 14.05, 21.08 and 13.99
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Solution
The fourth proportional to 14.05, 21.08 and 13.99 is: 20.99
Step by Step Solution
- Step 1: Write the proportion equation
14.05 : 21.08 = 13.99 : x - Step 2: Convert to fraction form
14.05/21.08 = 13.99/x - Step 3: Cross multiply
14.05x = 21.08 × 13.99 - Step 4: Simplify right side
14.05x = 294.91 - Step 5: Solve for x
x = 294.91/14.05 - Step 6: Final answer
x = 20.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.