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Finding the Fourth Proportional to 625.40, 862.83 and 376.63

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Solution

The fourth proportional to 625.40, 862.83 and 376.63 is: 519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.40 : 862.83 = 376.63 : x
  2. Step 2: Convert to fraction form
    625.40/862.83 = 376.63/x
  3. Step 3: Cross multiply
    625.40x = 862.83 × 376.63
  4. Step 4: Simplify right side
    625.40x = 324,967.66
  5. Step 5: Solve for x
    x = 324,967.66/625.40
  6. Step 6: Final answer
    x = 519.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.