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Finding the Fourth Proportional to 406.88, 561.46 and 241.16

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Solution

The fourth proportional to 406.88, 561.46 and 241.16 is: 332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.88 : 561.46 = 241.16 : x
  2. Step 2: Convert to fraction form
    406.88/561.46 = 241.16/x
  3. Step 3: Cross multiply
    406.88x = 561.46 × 241.16
  4. Step 4: Simplify right side
    406.88x = 135,401.69
  5. Step 5: Solve for x
    x = 135,401.69/406.88
  6. Step 6: Final answer
    x = 332.78

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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.