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Finding the Fourth Proportional to 936.28, 1,291.90 and 600.47

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Solution

The fourth proportional to 936.28, 1,291.90 and 600.47 is: 828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.28 : 1,291.90 = 600.47 : x
  2. Step 2: Convert to fraction form
    936.28/1,291.90 = 600.47/x
  3. Step 3: Cross multiply
    936.28x = 1,291.90 × 600.47
  4. Step 4: Simplify right side
    936.28x = 775,749.67
  5. Step 5: Solve for x
    x = 775,749.67/936.28
  6. Step 6: Final answer
    x = 828.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.