Finding the Fourth Proportional to 169, 253.50 and 40.75
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Solution
The fourth proportional to 169, 253.50 and 40.75 is: 61.13
Step by Step Solution
- Step 1: Write the proportion equation
169 : 253.50 = 40.75 : x - Step 2: Convert to fraction form
169/253.50 = 40.75/x - Step 3: Cross multiply
169x = 253.50 × 40.75 - Step 4: Simplify right side
169x = 10,330.13 - Step 5: Solve for x
x = 10,330.13/169 - Step 6: Final answer
x = 61.13
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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.