Finding the Fourth Proportional to 49.41, 68.19 and 30.99
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Solution
The fourth proportional to 49.41, 68.19 and 30.99 is: 42.77
Step by Step Solution
- Step 1: Write the proportion equation
49.41 : 68.19 = 30.99 : x - Step 2: Convert to fraction form
49.41/68.19 = 30.99/x - Step 3: Cross multiply
49.41x = 68.19 × 30.99 - Step 4: Simplify right side
49.41x = 2,113.21 - Step 5: Solve for x
x = 2,113.21/49.41 - Step 6: Final answer
x = 42.77
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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.