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Finding the Fourth Proportional to 447.28, 617.36 and 260.84

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Solution

The fourth proportional to 447.28, 617.36 and 260.84 is: 360.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.28 : 617.36 = 260.84 : x
  2. Step 2: Convert to fraction form
    447.28/617.36 = 260.84/x
  3. Step 3: Cross multiply
    447.28x = 617.36 × 260.84
  4. Step 4: Simplify right side
    447.28x = 161,032.18
  5. Step 5: Solve for x
    x = 161,032.18/447.28
  6. Step 6: Final answer
    x = 360.03

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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.