Finding the Fourth Proportional to 276.99, 415.68 and 208.64
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Solution
The fourth proportional to 276.99, 415.68 and 208.64 is: 313.11
Step by Step Solution
- Step 1: Write the proportion equation
276.99 : 415.68 = 208.64 : x - Step 2: Convert to fraction form
276.99/415.68 = 208.64/x - Step 3: Cross multiply
276.99x = 415.68 × 208.64 - Step 4: Simplify right side
276.99x = 86,727.48 - Step 5: Solve for x
x = 86,727.48/276.99 - Step 6: Final answer
x = 313.11
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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.