Home / 850.48-1,275.60-273.28

Finding the Fourth Proportional to 850.48, 1,275.60 and 273.28

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Solution

The fourth proportional to 850.48, 1,275.60 and 273.28 is: 409.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.48 : 1,275.60 = 273.28 : x
  2. Step 2: Convert to fraction form
    850.48/1,275.60 = 273.28/x
  3. Step 3: Cross multiply
    850.48x = 1,275.60 × 273.28
  4. Step 4: Simplify right side
    850.48x = 348,595.97
  5. Step 5: Solve for x
    x = 348,595.97/850.48
  6. Step 6: Final answer
    x = 409.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.