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Finding the Fourth Proportional to 486.42, 671.26 and 265.37

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Solution

The fourth proportional to 486.42, 671.26 and 265.37 is: 366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.42 : 671.26 = 265.37 : x
  2. Step 2: Convert to fraction form
    486.42/671.26 = 265.37/x
  3. Step 3: Cross multiply
    486.42x = 671.26 × 265.37
  4. Step 4: Simplify right side
    486.42x = 178,130.94
  5. Step 5: Solve for x
    x = 178,130.94/486.42
  6. Step 6: Final answer
    x = 366.21

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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.