Finding the Fourth Proportional to 470.57, 649.21 and 283.99
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Solution
The fourth proportional to 470.57, 649.21 and 283.99 is: 391.80
Step by Step Solution
- Step 1: Write the proportion equation
470.57 : 649.21 = 283.99 : x - Step 2: Convert to fraction form
470.57/649.21 = 283.99/x - Step 3: Cross multiply
470.57x = 649.21 × 283.99 - Step 4: Simplify right side
470.57x = 184,369.15 - Step 5: Solve for x
x = 184,369.15/470.57 - Step 6: Final answer
x = 391.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.