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Finding the Fourth Proportional to 624.38, 936.63 and 191.53

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Solution

The fourth proportional to 624.38, 936.63 and 191.53 is: 287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.38 : 936.63 = 191.53 : x
  2. Step 2: Convert to fraction form
    624.38/936.63 = 191.53/x
  3. Step 3: Cross multiply
    624.38x = 936.63 × 191.53
  4. Step 4: Simplify right side
    624.38x = 179,393.91
  5. Step 5: Solve for x
    x = 179,393.91/624.38
  6. Step 6: Final answer
    x = 287.32

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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.