Finding the Fourth Proportional to 43.72, 65.54 and 21.99
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Solution
The fourth proportional to 43.72, 65.54 and 21.99 is: 32.96
Step by Step Solution
- Step 1: Write the proportion equation
43.72 : 65.54 = 21.99 : x - Step 2: Convert to fraction form
43.72/65.54 = 21.99/x - Step 3: Cross multiply
43.72x = 65.54 × 21.99 - Step 4: Simplify right side
43.72x = 1,441.21 - Step 5: Solve for x
x = 1,441.21/43.72 - Step 6: Final answer
x = 32.96
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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.