Finding the Fourth Proportional to 354.99, 531.78 and 171.84
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Solution
The fourth proportional to 354.99, 531.78 and 171.84 is: 257.42
Step by Step Solution
- Step 1: Write the proportion equation
354.99 : 531.78 = 171.84 : x - Step 2: Convert to fraction form
354.99/531.78 = 171.84/x - Step 3: Cross multiply
354.99x = 531.78 × 171.84 - Step 4: Simplify right side
354.99x = 91,381.08 - Step 5: Solve for x
x = 91,381.08/354.99 - Step 6: Final answer
x = 257.42
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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.