Finding the Fourth Proportional to 274.93, 412.40 and 79.93
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Solution
The fourth proportional to 274.93, 412.40 and 79.93 is: 119.90
Step by Step Solution
- Step 1: Write the proportion equation
274.93 : 412.40 = 79.93 : x - Step 2: Convert to fraction form
274.93/412.40 = 79.93/x - Step 3: Cross multiply
274.93x = 412.40 × 79.93 - Step 4: Simplify right side
274.93x = 32,963.13 - Step 5: Solve for x
x = 32,963.13/274.93 - Step 6: Final answer
x = 119.90
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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.