Finding the Fourth Proportional to 327.99, 491.36 and 284.21
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Solution
The fourth proportional to 327.99, 491.36 and 284.21 is: 425.76
Step by Step Solution
- Step 1: Write the proportion equation
327.99 : 491.36 = 284.21 : x - Step 2: Convert to fraction form
327.99/491.36 = 284.21/x - Step 3: Cross multiply
327.99x = 491.36 × 284.21 - Step 4: Simplify right side
327.99x = 139,645.55 - Step 5: Solve for x
x = 139,645.55/327.99 - Step 6: Final answer
x = 425.76
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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.