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Finding the Fourth Proportional to 889.88, 1,334.96 and 273.68

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Solution

The fourth proportional to 889.88, 1,334.96 and 273.68 is: 410.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.88 : 1,334.96 = 273.68 : x
  2. Step 2: Convert to fraction form
    889.88/1,334.96 = 273.68/x
  3. Step 3: Cross multiply
    889.88x = 1,334.96 × 273.68
  4. Step 4: Simplify right side
    889.88x = 365,343.81
  5. Step 5: Solve for x
    x = 365,343.81/889.88
  6. Step 6: Final answer
    x = 410.56

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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.