Finding the Fourth Proportional to 331.19, 457.08 and 206.94
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Solution
The fourth proportional to 331.19, 457.08 and 206.94 is: 285.60
Step by Step Solution
- Step 1: Write the proportion equation
331.19 : 457.08 = 206.94 : x - Step 2: Convert to fraction form
331.19/457.08 = 206.94/x - Step 3: Cross multiply
331.19x = 457.08 × 206.94 - Step 4: Simplify right side
331.19x = 94,588.14 - Step 5: Solve for x
x = 94,588.14/331.19 - Step 6: Final answer
x = 285.60
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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.