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Finding the Fourth Proportional to 486.30, 671.08 and 265.25

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Solution

The fourth proportional to 486.30, 671.08 and 265.25 is: 366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.30 : 671.08 = 265.25 : x
  2. Step 2: Convert to fraction form
    486.30/671.08 = 265.25/x
  3. Step 3: Cross multiply
    486.30x = 671.08 × 265.25
  4. Step 4: Simplify right side
    486.30x = 178,003.97
  5. Step 5: Solve for x
    x = 178,003.97/486.30
  6. Step 6: Final answer
    x = 366.04

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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.