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Finding the Fourth Proportional to 623.30, 863.69 and 608.94

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Solution

The fourth proportional to 623.30, 863.69 and 608.94 is: 843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.30 : 863.69 = 608.94 : x
  2. Step 2: Convert to fraction form
    623.30/863.69 = 608.94/x
  3. Step 3: Cross multiply
    623.30x = 863.69 × 608.94
  4. Step 4: Simplify right side
    623.30x = 525,940.34
  5. Step 5: Solve for x
    x = 525,940.34/623.30
  6. Step 6: Final answer
    x = 843.81

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.