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Finding the Fourth Proportional to 624.59, 936.88 and 191.75

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Solution

The fourth proportional to 624.59, 936.88 and 191.75 is: 287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.59 : 936.88 = 191.75 : x
  2. Step 2: Convert to fraction form
    624.59/936.88 = 191.75/x
  3. Step 3: Cross multiply
    624.59x = 936.88 × 191.75
  4. Step 4: Simplify right side
    624.59x = 179,647.92
  5. Step 5: Solve for x
    x = 179,647.92/624.59
  6. Step 6: Final answer
    x = 287.62

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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.