Finding the Fourth Proportional to 423.92, 635.93 and 115.79
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Solution
The fourth proportional to 423.92, 635.93 and 115.79 is: 173.69
Step by Step Solution
- Step 1: Write the proportion equation
423.92 : 635.93 = 115.79 : x - Step 2: Convert to fraction form
423.92/635.93 = 115.79/x - Step 3: Cross multiply
423.92x = 635.93 × 115.79 - Step 4: Simplify right side
423.92x = 73,630.58 - Step 5: Solve for x
x = 73,630.58/423.92 - Step 6: Final answer
x = 173.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.