Finding the Fourth Proportional to 508.44, 761.04 and 430.68
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Solution
The fourth proportional to 508.44, 761.04 and 430.68 is: 644.65
Step by Step Solution
- Step 1: Write the proportion equation
508.44 : 761.04 = 430.68 : x - Step 2: Convert to fraction form
508.44/761.04 = 430.68/x - Step 3: Cross multiply
508.44x = 761.04 × 430.68 - Step 4: Simplify right side
508.44x = 327,764.71 - Step 5: Solve for x
x = 327,764.71/508.44 - Step 6: Final answer
x = 644.65
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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.