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Finding the Fourth Proportional to 624.20, 936.02 and 191.39

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Solution

The fourth proportional to 624.20, 936.02 and 191.39 is: 286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.20 : 936.02 = 191.39 : x
  2. Step 2: Convert to fraction form
    624.20/936.02 = 191.39/x
  3. Step 3: Cross multiply
    624.20x = 936.02 × 191.39
  4. Step 4: Simplify right side
    624.20x = 179,140.67
  5. Step 5: Solve for x
    x = 179,140.67/624.20
  6. Step 6: Final answer
    x = 286.99

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1.5x scale

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.