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Finding the Fourth Proportional to 344.15, 515.98 and 112.96

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Solution

The fourth proportional to 344.15, 515.98 and 112.96 is: 169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.15 : 515.98 = 112.96 : x
  2. Step 2: Convert to fraction form
    344.15/515.98 = 112.96/x
  3. Step 3: Cross multiply
    344.15x = 515.98 × 112.96
  4. Step 4: Simplify right side
    344.15x = 58,281.96
  5. Step 5: Solve for x
    x = 58,281.96/344.15
  6. Step 6: Final answer
    x = 169.35

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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.