Finding the Fourth Proportional to 420.23, 630.08 and 189.08
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Solution
The fourth proportional to 420.23, 630.08 and 189.08 is: 283.50
Step by Step Solution
- Step 1: Write the proportion equation
420.23 : 630.08 = 189.08 : x - Step 2: Convert to fraction form
420.23/630.08 = 189.08/x - Step 3: Cross multiply
420.23x = 630.08 × 189.08 - Step 4: Simplify right side
420.23x = 119,132.85 - Step 5: Solve for x
x = 119,132.85/420.23 - Step 6: Final answer
x = 283.50
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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.