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Finding the Fourth Proportional to 625.37, 862.61 and 376.51

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Solution

The fourth proportional to 625.37, 862.61 and 376.51 is: 519.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.37 : 862.61 = 376.51 : x
  2. Step 2: Convert to fraction form
    625.37/862.61 = 376.51/x
  3. Step 3: Cross multiply
    625.37x = 862.61 × 376.51
  4. Step 4: Simplify right side
    625.37x = 324,779.41
  5. Step 5: Solve for x
    x = 324,779.41/625.37
  6. Step 6: Final answer
    x = 519.34

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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.