Finding the Fourth Proportional to 644.04, 966.06 and 278.64
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Solution
The fourth proportional to 644.04, 966.06 and 278.64 is: 417.96
Step by Step Solution
- Step 1: Write the proportion equation
644.04 : 966.06 = 278.64 : x - Step 2: Convert to fraction form
644.04/966.06 = 278.64/x - Step 3: Cross multiply
644.04x = 966.06 × 278.64 - Step 4: Simplify right side
644.04x = 269,182.96 - Step 5: Solve for x
x = 269,182.96/644.04 - Step 6: Final answer
x = 417.96
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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.