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Finding the Fourth Proportional to 470.07, 648.70 and 273.64

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Solution

The fourth proportional to 470.07, 648.70 and 273.64 is: 377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.07 : 648.70 = 273.64 : x
  2. Step 2: Convert to fraction form
    470.07/648.70 = 273.64/x
  3. Step 3: Cross multiply
    470.07x = 648.70 × 273.64
  4. Step 4: Simplify right side
    470.07x = 177,510.27
  5. Step 5: Solve for x
    x = 177,510.27/470.07
  6. Step 6: Final answer
    x = 377.63

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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.