Finding the Fourth Proportional to 423.76, 635.68 and 115.63
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Solution
The fourth proportional to 423.76, 635.68 and 115.63 is: 173.46
Step by Step Solution
- Step 1: Write the proportion equation
423.76 : 635.68 = 115.63 : x - Step 2: Convert to fraction form
423.76/635.68 = 115.63/x - Step 3: Cross multiply
423.76x = 635.68 × 115.63 - Step 4: Simplify right side
423.76x = 73,503.68 - Step 5: Solve for x
x = 73,503.68/423.76 - Step 6: Final answer
x = 173.46
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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.