Finding the Fourth Proportional to 625.23, 862.76 and 389.52
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Solution
The fourth proportional to 625.23, 862.76 and 389.52 is: 537.50
Step by Step Solution
- Step 1: Write the proportion equation
625.23 : 862.76 = 389.52 : x - Step 2: Convert to fraction form
625.23/862.76 = 389.52/x - Step 3: Cross multiply
625.23x = 862.76 × 389.52 - Step 4: Simplify right side
625.23x = 336,060.33 - Step 5: Solve for x
x = 336,060.33/625.23 - Step 6: Final answer
x = 537.50
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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.