Finding the Fourth Proportional to 645.42, 966.62 and 471.66
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Solution
The fourth proportional to 645.42, 966.62 and 471.66 is: 706.39
Step by Step Solution
- Step 1: Write the proportion equation
645.42 : 966.62 = 471.66 : x - Step 2: Convert to fraction form
645.42/966.62 = 471.66/x - Step 3: Cross multiply
645.42x = 966.62 × 471.66 - Step 4: Simplify right side
645.42x = 455,915.99 - Step 5: Solve for x
x = 455,915.99/645.42 - Step 6: Final answer
x = 706.39
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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.