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Finding the Fourth Proportional to 624.89, 862.37 and 376.36

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Solution

The fourth proportional to 624.89, 862.37 and 376.36 is: 519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.89 : 862.37 = 376.36 : x
  2. Step 2: Convert to fraction form
    624.89/862.37 = 376.36/x
  3. Step 3: Cross multiply
    624.89x = 862.37 × 376.36
  4. Step 4: Simplify right side
    624.89x = 324,561.57
  5. Step 5: Solve for x
    x = 324,561.57/624.89
  6. Step 6: Final answer
    x = 519.39

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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.