Finding the Fourth Proportional to 420.93, 630.63 and 177.02
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Solution
The fourth proportional to 420.93, 630.63 and 177.02 is: 265.20
Step by Step Solution
- Step 1: Write the proportion equation
420.93 : 630.63 = 177.02 : x - Step 2: Convert to fraction form
420.93/630.63 = 177.02/x - Step 3: Cross multiply
420.93x = 630.63 × 177.02 - Step 4: Simplify right side
420.93x = 111,630.08 - Step 5: Solve for x
x = 111,630.08/420.93 - Step 6: Final answer
x = 265.20
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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.