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Finding the Fourth Proportional to 624, 860.94 and 375.21

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Solution

The fourth proportional to 624, 860.94 and 375.21 is: 517.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624 : 860.94 = 375.21 : x
  2. Step 2: Convert to fraction form
    624/860.94 = 375.21/x
  3. Step 3: Cross multiply
    624x = 860.94 × 375.21
  4. Step 4: Simplify right side
    624x = 323,033.30
  5. Step 5: Solve for x
    x = 323,033.30/624
  6. Step 6: Final answer
    x = 517.68

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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.