Finding the Fourth Proportional to 368.70, 551.70 and 247.20
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Solution
The fourth proportional to 368.70, 551.70 and 247.20 is: 369.89
Step by Step Solution
- Step 1: Write the proportion equation
368.70 : 551.70 = 247.20 : x - Step 2: Convert to fraction form
368.70/551.70 = 247.20/x - Step 3: Cross multiply
368.70x = 551.70 × 247.20 - Step 4: Simplify right side
368.70x = 136,380.24 - Step 5: Solve for x
x = 136,380.24/368.70 - Step 6: Final answer
x = 369.89
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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.