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Finding the Fourth Proportional to 469.66, 648.12 and 273.28

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Solution

The fourth proportional to 469.66, 648.12 and 273.28 is: 377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.66 : 648.12 = 273.28 : x
  2. Step 2: Convert to fraction form
    469.66/648.12 = 273.28/x
  3. Step 3: Cross multiply
    469.66x = 648.12 × 273.28
  4. Step 4: Simplify right side
    469.66x = 177,118.23
  5. Step 5: Solve for x
    x = 177,118.23/469.66
  6. Step 6: Final answer
    x = 377.12

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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.