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Finding the Fourth Proportional to 624.75, 937.12 and 380.80

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Solution

The fourth proportional to 624.75, 937.12 and 380.80 is: 571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.75 : 937.12 = 380.80 : x
  2. Step 2: Convert to fraction form
    624.75/937.12 = 380.80/x
  3. Step 3: Cross multiply
    624.75x = 937.12 × 380.80
  4. Step 4: Simplify right side
    624.75x = 356,855.30
  5. Step 5: Solve for x
    x = 356,855.30/624.75
  6. Step 6: Final answer
    x = 571.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.