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Finding the Fourth Proportional to 624.31, 936.55 and 191.45

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Solution

The fourth proportional to 624.31, 936.55 and 191.45 is: 287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.31 : 936.55 = 191.45 : x
  2. Step 2: Convert to fraction form
    624.31/936.55 = 191.45/x
  3. Step 3: Cross multiply
    624.31x = 936.55 × 191.45
  4. Step 4: Simplify right side
    624.31x = 179,302.50
  5. Step 5: Solve for x
    x = 179,302.50/624.31
  6. Step 6: Final answer
    x = 287.20

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Similar ratio
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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.