Finding the Fourth Proportional to 420.92, 631.11 and 201.43
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Solution
The fourth proportional to 420.92, 631.11 and 201.43 is: 302.01
Step by Step Solution
- Step 1: Write the proportion equation
420.92 : 631.11 = 201.43 : x - Step 2: Convert to fraction form
420.92/631.11 = 201.43/x - Step 3: Cross multiply
420.92x = 631.11 × 201.43 - Step 4: Simplify right side
420.92x = 127,122.91 - Step 5: Solve for x
x = 127,122.91/420.92 - Step 6: Final answer
x = 302.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.