Finding the Fourth Proportional to 420.08, 579.65 and 233.58
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Solution
The fourth proportional to 420.08, 579.65 and 233.58 is: 322.31
Step by Step Solution
- Step 1: Write the proportion equation
420.08 : 579.65 = 233.58 : x - Step 2: Convert to fraction form
420.08/579.65 = 233.58/x - Step 3: Cross multiply
420.08x = 579.65 × 233.58 - Step 4: Simplify right side
420.08x = 135,395.23 - Step 5: Solve for x
x = 135,395.23/420.08 - Step 6: Final answer
x = 322.31
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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.