Finding the Fourth Proportional to 38.37, 52.94 and 21.99
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Solution
The fourth proportional to 38.37, 52.94 and 21.99 is: 30.34
Step by Step Solution
- Step 1: Write the proportion equation
38.37 : 52.94 = 21.99 : x - Step 2: Convert to fraction form
38.37/52.94 = 21.99/x - Step 3: Cross multiply
38.37x = 52.94 × 21.99 - Step 4: Simplify right side
38.37x = 1,164.04 - Step 5: Solve for x
x = 1,164.04/38.37 - Step 6: Final answer
x = 30.34
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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.