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Finding the Fourth Proportional to 624.50, 936.75 and 191.66

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Solution

The fourth proportional to 624.50, 936.75 and 191.66 is: 287.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.50 : 936.75 = 191.66 : x
  2. Step 2: Convert to fraction form
    624.50/936.75 = 191.66/x
  3. Step 3: Cross multiply
    624.50x = 936.75 × 191.66
  4. Step 4: Simplify right side
    624.50x = 179,537.51
  5. Step 5: Solve for x
    x = 179,537.51/624.50
  6. Step 6: Final answer
    x = 287.49

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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.