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Finding the Fourth Proportional to 623.93, 861.33 and 483.73

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Solution

The fourth proportional to 623.93, 861.33 and 483.73 is: 667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.93 : 861.33 = 483.73 : x
  2. Step 2: Convert to fraction form
    623.93/861.33 = 483.73/x
  3. Step 3: Cross multiply
    623.93x = 861.33 × 483.73
  4. Step 4: Simplify right side
    623.93x = 416,644.44
  5. Step 5: Solve for x
    x = 416,644.44/623.93
  6. Step 6: Final answer
    x = 667.78

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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.