Finding the Fourth Proportional to 257.23, 354.97 and 140.79
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Solution
The fourth proportional to 257.23, 354.97 and 140.79 is: 194.29
Step by Step Solution
- Step 1: Write the proportion equation
257.23 : 354.97 = 140.79 : x - Step 2: Convert to fraction form
257.23/354.97 = 140.79/x - Step 3: Cross multiply
257.23x = 354.97 × 140.79 - Step 4: Simplify right side
257.23x = 49,976.23 - Step 5: Solve for x
x = 49,976.23/257.23 - Step 6: Final answer
x = 194.29
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.