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Finding the Fourth Proportional to 406.59, 561.14 and 249.23

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Solution

The fourth proportional to 406.59, 561.14 and 249.23 is: 343.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.59 : 561.14 = 249.23 : x
  2. Step 2: Convert to fraction form
    406.59/561.14 = 249.23/x
  3. Step 3: Cross multiply
    406.59x = 561.14 × 249.23
  4. Step 4: Simplify right side
    406.59x = 139,852.26
  5. Step 5: Solve for x
    x = 139,852.26/406.59
  6. Step 6: Final answer
    x = 343.97

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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.