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Finding the Fourth Proportional to 624.07, 936.21 and 191.13

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Solution

The fourth proportional to 624.07, 936.21 and 191.13 is: 286.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.07 : 936.21 = 191.13 : x
  2. Step 2: Convert to fraction form
    624.07/936.21 = 191.13/x
  3. Step 3: Cross multiply
    624.07x = 936.21 × 191.13
  4. Step 4: Simplify right side
    624.07x = 178,937.82
  5. Step 5: Solve for x
    x = 178,937.82/624.07
  6. Step 6: Final answer
    x = 286.73

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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.