Finding the Fourth Proportional to 425.99, 640.05 and 271.99
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Solution
The fourth proportional to 425.99, 640.05 and 271.99 is: 408.66
Step by Step Solution
- Step 1: Write the proportion equation
425.99 : 640.05 = 271.99 : x - Step 2: Convert to fraction form
425.99/640.05 = 271.99/x - Step 3: Cross multiply
425.99x = 640.05 × 271.99 - Step 4: Simplify right side
425.99x = 174,084.00 - Step 5: Solve for x
x = 174,084.00/425.99 - Step 6: Final answer
x = 408.66
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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.