Finding the Fourth Proportional to 149.11, 205.68 and 93.13
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Solution
The fourth proportional to 149.11, 205.68 and 93.13 is: 128.46
Step by Step Solution
- Step 1: Write the proportion equation
149.11 : 205.68 = 93.13 : x - Step 2: Convert to fraction form
149.11/205.68 = 93.13/x - Step 3: Cross multiply
149.11x = 205.68 × 93.13 - Step 4: Simplify right side
149.11x = 19,154.53 - Step 5: Solve for x
x = 19,154.53/149.11 - Step 6: Final answer
x = 128.46
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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.