Finding the Fourth Proportional to 383.68, 529.57 and 217.99
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Solution
The fourth proportional to 383.68, 529.57 and 217.99 is: 300.88
Step by Step Solution
- Step 1: Write the proportion equation
383.68 : 529.57 = 217.99 : x - Step 2: Convert to fraction form
383.68/529.57 = 217.99/x - Step 3: Cross multiply
383.68x = 529.57 × 217.99 - Step 4: Simplify right side
383.68x = 115,440.96 - Step 5: Solve for x
x = 115,440.96/383.68 - Step 6: Final answer
x = 300.88
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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.