Finding the Fourth Proportional to 382.23, 572.99 and 138.58
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Solution
The fourth proportional to 382.23, 572.99 and 138.58 is: 207.74
Step by Step Solution
- Step 1: Write the proportion equation
382.23 : 572.99 = 138.58 : x - Step 2: Convert to fraction form
382.23/572.99 = 138.58/x - Step 3: Cross multiply
382.23x = 572.99 × 138.58 - Step 4: Simplify right side
382.23x = 79,404.95 - Step 5: Solve for x
x = 79,404.95/382.23 - Step 6: Final answer
x = 207.74
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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.