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Finding the Fourth Proportional to 447.48, 617.50 and 261.03

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Solution

The fourth proportional to 447.48, 617.50 and 261.03 is: 360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.48 : 617.50 = 261.03 : x
  2. Step 2: Convert to fraction form
    447.48/617.50 = 261.03/x
  3. Step 3: Cross multiply
    447.48x = 617.50 × 261.03
  4. Step 4: Simplify right side
    447.48x = 161,186.03
  5. Step 5: Solve for x
    x = 161,186.03/447.48
  6. Step 6: Final answer
    x = 360.21

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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.