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Finding the Fourth Proportional to 344.09, 515.39 and 228.59

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Solution

The fourth proportional to 344.09, 515.39 and 228.59 is: 342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.09 : 515.39 = 228.59 : x
  2. Step 2: Convert to fraction form
    344.09/515.39 = 228.59/x
  3. Step 3: Cross multiply
    344.09x = 515.39 × 228.59
  4. Step 4: Simplify right side
    344.09x = 117,813.00
  5. Step 5: Solve for x
    x = 117,813.00/344.09
  6. Step 6: Final answer
    x = 342.39

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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.