Finding the Fourth Proportional to 423.63, 634.37 and 387.99
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Solution
The fourth proportional to 423.63, 634.37 and 387.99 is: 581.00
Step by Step Solution
- Step 1: Write the proportion equation
423.63 : 634.37 = 387.99 : x - Step 2: Convert to fraction form
423.63/634.37 = 387.99/x - Step 3: Cross multiply
423.63x = 634.37 × 387.99 - Step 4: Simplify right side
423.63x = 246,127.28 - Step 5: Solve for x
x = 246,127.28/423.63 - Step 6: Final answer
x = 581.00
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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.