Finding the Fourth Proportional to 274.32, 378.57 and 149.99
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Solution
The fourth proportional to 274.32, 378.57 and 149.99 is: 206.99
Step by Step Solution
- Step 1: Write the proportion equation
274.32 : 378.57 = 149.99 : x - Step 2: Convert to fraction form
274.32/378.57 = 149.99/x - Step 3: Cross multiply
274.32x = 378.57 × 149.99 - Step 4: Simplify right side
274.32x = 56,781.71 - Step 5: Solve for x
x = 56,781.71/274.32 - Step 6: Final answer
x = 206.99
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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.