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Finding the Fourth Proportional to 623.26, 860.11 and 343.49

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Solution

The fourth proportional to 623.26, 860.11 and 343.49 is: 474.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.26 : 860.11 = 343.49 : x
  2. Step 2: Convert to fraction form
    623.26/860.11 = 343.49/x
  3. Step 3: Cross multiply
    623.26x = 860.11 × 343.49
  4. Step 4: Simplify right side
    623.26x = 295,439.18
  5. Step 5: Solve for x
    x = 295,439.18/623.26
  6. Step 6: Final answer
    x = 474.02

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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.