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Finding the Fourth Proportional to 470.07, 648.45 and 273.42

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Solution

The fourth proportional to 470.07, 648.45 and 273.42 is: 377.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.07 : 648.45 = 273.42 : x
  2. Step 2: Convert to fraction form
    470.07/648.45 = 273.42/x
  3. Step 3: Cross multiply
    470.07x = 648.45 × 273.42
  4. Step 4: Simplify right side
    470.07x = 177,299.20
  5. Step 5: Solve for x
    x = 177,299.20/470.07
  6. Step 6: Final answer
    x = 377.18

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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.