Finding the Fourth Proportional to 420.03, 630.09 and 159.99
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Solution
The fourth proportional to 420.03, 630.09 and 159.99 is: 240.00
Step by Step Solution
- Step 1: Write the proportion equation
420.03 : 630.09 = 159.99 : x - Step 2: Convert to fraction form
420.03/630.09 = 159.99/x - Step 3: Cross multiply
420.03x = 630.09 × 159.99 - Step 4: Simplify right side
420.03x = 100,808.10 - Step 5: Solve for x
x = 100,808.10/420.03 - Step 6: Final answer
x = 240.00
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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.