Finding the Fourth Proportional to 274.64, 378.36 and 258.96
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Solution
The fourth proportional to 274.64, 378.36 and 258.96 is: 356.76
Step by Step Solution
- Step 1: Write the proportion equation
274.64 : 378.36 = 258.96 : x - Step 2: Convert to fraction form
274.64/378.36 = 258.96/x - Step 3: Cross multiply
274.64x = 378.36 × 258.96 - Step 4: Simplify right side
274.64x = 97,980.11 - Step 5: Solve for x
x = 97,980.11/274.64 - Step 6: Final answer
x = 356.76
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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.