Finding the Fourth Proportional to 328.91, 454.10 and 306.99
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Solution
The fourth proportional to 328.91, 454.10 and 306.99 is: 423.84
Step by Step Solution
- Step 1: Write the proportion equation
328.91 : 454.10 = 306.99 : x - Step 2: Convert to fraction form
328.91/454.10 = 306.99/x - Step 3: Cross multiply
328.91x = 454.10 × 306.99 - Step 4: Simplify right side
328.91x = 139,402.62 - Step 5: Solve for x
x = 139,402.62/328.91 - Step 6: Final answer
x = 423.84
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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.