Finding the Fourth Proportional to 424.70, 635.70 and 303.20
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Solution
The fourth proportional to 424.70, 635.70 and 303.20 is: 453.84
Step by Step Solution
- Step 1: Write the proportion equation
424.70 : 635.70 = 303.20 : x - Step 2: Convert to fraction form
424.70/635.70 = 303.20/x - Step 3: Cross multiply
424.70x = 635.70 × 303.20 - Step 4: Simplify right side
424.70x = 192,744.24 - Step 5: Solve for x
x = 192,744.24/424.70 - Step 6: Final answer
x = 453.84
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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.