Finding the Fourth Proportional to 328.79, 493.17 and 189.99
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Solution
The fourth proportional to 328.79, 493.17 and 189.99 is: 284.98
Step by Step Solution
- Step 1: Write the proportion equation
328.79 : 493.17 = 189.99 : x - Step 2: Convert to fraction form
328.79/493.17 = 189.99/x - Step 3: Cross multiply
328.79x = 493.17 × 189.99 - Step 4: Simplify right side
328.79x = 93,697.37 - Step 5: Solve for x
x = 93,697.37/328.79 - Step 6: Final answer
x = 284.98
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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.