Finding the Fourth Proportional to 386.07, 579.17 and 125.99
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Solution
The fourth proportional to 386.07, 579.17 and 125.99 is: 189.01
Step by Step Solution
- Step 1: Write the proportion equation
386.07 : 579.17 = 125.99 : x - Step 2: Convert to fraction form
386.07/579.17 = 125.99/x - Step 3: Cross multiply
386.07x = 579.17 × 125.99 - Step 4: Simplify right side
386.07x = 72,970.45 - Step 5: Solve for x
x = 72,970.45/386.07 - Step 6: Final answer
x = 189.01
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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.