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Finding the Fourth Proportional to 343.80, 515.75 and 124.44

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Solution

The fourth proportional to 343.80, 515.75 and 124.44 is: 186.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.80 : 515.75 = 124.44 : x
  2. Step 2: Convert to fraction form
    343.80/515.75 = 124.44/x
  3. Step 3: Cross multiply
    343.80x = 515.75 × 124.44
  4. Step 4: Simplify right side
    343.80x = 64,180.37
  5. Step 5: Solve for x
    x = 64,180.37/343.80
  6. Step 6: Final answer
    x = 186.68

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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.