Finding the Fourth Proportional to 149.14, 205.76 and 93.09
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Solution
The fourth proportional to 149.14, 205.76 and 93.09 is: 128.43
Step by Step Solution
- Step 1: Write the proportion equation
149.14 : 205.76 = 93.09 : x - Step 2: Convert to fraction form
149.14/205.76 = 93.09/x - Step 3: Cross multiply
149.14x = 205.76 × 93.09 - Step 4: Simplify right side
149.14x = 19,154.68 - Step 5: Solve for x
x = 19,154.68/149.14 - Step 6: Final answer
x = 128.43
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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.