Finding the Fourth Proportional to 470.68, 649.08 and 330.75
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Solution
The fourth proportional to 470.68, 649.08 and 330.75 is: 456.12
Step by Step Solution
- Step 1: Write the proportion equation
470.68 : 649.08 = 330.75 : x - Step 2: Convert to fraction form
470.68/649.08 = 330.75/x - Step 3: Cross multiply
470.68x = 649.08 × 330.75 - Step 4: Simplify right side
470.68x = 214,683.21 - Step 5: Solve for x
x = 214,683.21/470.68 - Step 6: Final answer
x = 456.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.