Finding the Fourth Proportional to 839.99, 1,159.11 and 466.99
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Solution
The fourth proportional to 839.99, 1,159.11 and 466.99 is: 644.40
Step by Step Solution
- Step 1: Write the proportion equation
839.99 : 1,159.11 = 466.99 : x - Step 2: Convert to fraction form
839.99/1,159.11 = 466.99/x - Step 3: Cross multiply
839.99x = 1,159.11 × 466.99 - Step 4: Simplify right side
839.99x = 541,289.88 - Step 5: Solve for x
x = 541,289.88/839.99 - Step 6: Final answer
x = 644.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.