Finding the Fourth Proportional to 257.99, 387.79 and 162.41
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Solution
The fourth proportional to 257.99, 387.79 and 162.41 is: 244.12
Step by Step Solution
- Step 1: Write the proportion equation
257.99 : 387.79 = 162.41 : x - Step 2: Convert to fraction form
257.99/387.79 = 162.41/x - Step 3: Cross multiply
257.99x = 387.79 × 162.41 - Step 4: Simplify right side
257.99x = 62,978.63 - Step 5: Solve for x
x = 62,978.63/257.99 - Step 6: Final answer
x = 244.12
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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.