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Finding the Fourth Proportional to 343.40, 515.22 and 246.67

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Solution

The fourth proportional to 343.40, 515.22 and 246.67 is: 370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.40 : 515.22 = 246.67 : x
  2. Step 2: Convert to fraction form
    343.40/515.22 = 246.67/x
  3. Step 3: Cross multiply
    343.40x = 515.22 × 246.67
  4. Step 4: Simplify right side
    343.40x = 127,089.32
  5. Step 5: Solve for x
    x = 127,089.32/343.40
  6. Step 6: Final answer
    x = 370.09

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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.