Finding the Fourth Proportional to 176.18, 243.08 and 129.63
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Solution
The fourth proportional to 176.18, 243.08 and 129.63 is: 178.85
Step by Step Solution
- Step 1: Write the proportion equation
176.18 : 243.08 = 129.63 : x - Step 2: Convert to fraction form
176.18/243.08 = 129.63/x - Step 3: Cross multiply
176.18x = 243.08 × 129.63 - Step 4: Simplify right side
176.18x = 31,508.79 - Step 5: Solve for x
x = 31,508.79/176.18 - Step 6: Final answer
x = 178.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.