Finding the Fourth Proportional to 914.86, 1,372 and 768.65
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Solution
The fourth proportional to 914.86, 1,372 and 768.65 is: 1,152.73
Step by Step Solution
- Step 1: Write the proportion equation
914.86 : 1,372 = 768.65 : x - Step 2: Convert to fraction form
914.86/1,372 = 768.65/x - Step 3: Cross multiply
914.86x = 1,372 × 768.65 - Step 4: Simplify right side
914.86x = 1,054,587.80 - Step 5: Solve for x
x = 1,054,587.80/914.86 - Step 6: Final answer
x = 1,152.73
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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.