Finding the Fourth Proportional to 420.71, 630.99 and 160.70
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Solution
The fourth proportional to 420.71, 630.99 and 160.70 is: 241.02
Step by Step Solution
- Step 1: Write the proportion equation
420.71 : 630.99 = 160.70 : x - Step 2: Convert to fraction form
420.71/630.99 = 160.70/x - Step 3: Cross multiply
420.71x = 630.99 × 160.70 - Step 4: Simplify right side
420.71x = 101,396.94 - Step 5: Solve for x
x = 101,396.94/420.71 - Step 6: Final answer
x = 241.02
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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.