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Finding the Fourth Proportional to 486.10, 670.96 and 330.94

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Solution

The fourth proportional to 486.10, 670.96 and 330.94 is: 456.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.10 : 670.96 = 330.94 : x
  2. Step 2: Convert to fraction form
    486.10/670.96 = 330.94/x
  3. Step 3: Cross multiply
    486.10x = 670.96 × 330.94
  4. Step 4: Simplify right side
    486.10x = 222,047.50
  5. Step 5: Solve for x
    x = 222,047.50/486.10
  6. Step 6: Final answer
    x = 456.79

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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.