Finding the Fourth Proportional to 482.75, 665.68 and 358.21
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Solution
The fourth proportional to 482.75, 665.68 and 358.21 is: 493.95
Step by Step Solution
- Step 1: Write the proportion equation
482.75 : 665.68 = 358.21 : x - Step 2: Convert to fraction form
482.75/665.68 = 358.21/x - Step 3: Cross multiply
482.75x = 665.68 × 358.21 - Step 4: Simplify right side
482.75x = 238,453.23 - Step 5: Solve for x
x = 238,453.23/482.75 - Step 6: Final answer
x = 493.95
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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.