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Finding the Fourth Proportional to 889.54, 1,334.34 and 240.28

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Solution

The fourth proportional to 889.54, 1,334.34 and 240.28 is: 360.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.54 : 1,334.34 = 240.28 : x
  2. Step 2: Convert to fraction form
    889.54/1,334.34 = 240.28/x
  3. Step 3: Cross multiply
    889.54x = 1,334.34 × 240.28
  4. Step 4: Simplify right side
    889.54x = 320,615.22
  5. Step 5: Solve for x
    x = 320,615.22/889.54
  6. Step 6: Final answer
    x = 360.43

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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.