Finding the Fourth Proportional to 478.37, 660.24 and 281.99
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Solution
The fourth proportional to 478.37, 660.24 and 281.99 is: 389.19
Step by Step Solution
- Step 1: Write the proportion equation
478.37 : 660.24 = 281.99 : x - Step 2: Convert to fraction form
478.37/660.24 = 281.99/x - Step 3: Cross multiply
478.37x = 660.24 × 281.99 - Step 4: Simplify right side
478.37x = 186,176.37 - Step 5: Solve for x
x = 186,176.37/478.37 - Step 6: Final answer
x = 389.19
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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.