Finding the Fourth Proportional to 389.48, 584.98 and 302.99
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Solution
The fourth proportional to 389.48, 584.98 and 302.99 is: 455.08
Step by Step Solution
- Step 1: Write the proportion equation
389.48 : 584.98 = 302.99 : x - Step 2: Convert to fraction form
389.48/584.98 = 302.99/x - Step 3: Cross multiply
389.48x = 584.98 × 302.99 - Step 4: Simplify right side
389.48x = 177,243.09 - Step 5: Solve for x
x = 177,243.09/389.48 - Step 6: Final answer
x = 455.08
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.