Finding the Fourth Proportional to 470.38, 648.72 and 371.96
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Solution
The fourth proportional to 470.38, 648.72 and 371.96 is: 512.99
Step by Step Solution
- Step 1: Write the proportion equation
470.38 : 648.72 = 371.96 : x - Step 2: Convert to fraction form
470.38/648.72 = 371.96/x - Step 3: Cross multiply
470.38x = 648.72 × 371.96 - Step 4: Simplify right side
470.38x = 241,299.51 - Step 5: Solve for x
x = 241,299.51/470.38 - Step 6: Final answer
x = 512.99
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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.