Finding the Fourth Proportional to 331.21, 457.11 and 183.86
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Solution
The fourth proportional to 331.21, 457.11 and 183.86 is: 253.75
Step by Step Solution
- Step 1: Write the proportion equation
331.21 : 457.11 = 183.86 : x - Step 2: Convert to fraction form
331.21/457.11 = 183.86/x - Step 3: Cross multiply
331.21x = 457.11 × 183.86 - Step 4: Simplify right side
331.21x = 84,044.24 - Step 5: Solve for x
x = 84,044.24/331.21 - Step 6: Final answer
x = 253.75
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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.