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Finding the Fourth Proportional to 469.97, 648.55 and 273.55

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Solution

The fourth proportional to 469.97, 648.55 and 273.55 is: 377.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.97 : 648.55 = 273.55 : x
  2. Step 2: Convert to fraction form
    469.97/648.55 = 273.55/x
  3. Step 3: Cross multiply
    469.97x = 648.55 × 273.55
  4. Step 4: Simplify right side
    469.97x = 177,410.85
  5. Step 5: Solve for x
    x = 177,410.85/469.97
  6. Step 6: Final answer
    x = 377.49

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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.