Finding the Fourth Proportional to 276.70, 381.52 and 202.99
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Solution
The fourth proportional to 276.70, 381.52 and 202.99 is: 279.89
Step by Step Solution
- Step 1: Write the proportion equation
276.70 : 381.52 = 202.99 : x - Step 2: Convert to fraction form
276.70/381.52 = 202.99/x - Step 3: Cross multiply
276.70x = 381.52 × 202.99 - Step 4: Simplify right side
276.70x = 77,444.74 - Step 5: Solve for x
x = 77,444.74/276.70 - Step 6: Final answer
x = 279.89
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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.