Finding the Fourth Proportional to 385.80, 532.37 and 220.02
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Solution
The fourth proportional to 385.80, 532.37 and 220.02 is: 303.61
Step by Step Solution
- Step 1: Write the proportion equation
385.80 : 532.37 = 220.02 : x - Step 2: Convert to fraction form
385.80/532.37 = 220.02/x - Step 3: Cross multiply
385.80x = 532.37 × 220.02 - Step 4: Simplify right side
385.80x = 117,130.60 - Step 5: Solve for x
x = 117,130.60/385.80 - Step 6: Final answer
x = 303.61
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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.