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Finding the Fourth Proportional to 936.27, 1,404.77 and 351.54

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Solution

The fourth proportional to 936.27, 1,404.77 and 351.54 is: 527.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.27 : 1,404.77 = 351.54 : x
  2. Step 2: Convert to fraction form
    936.27/1,404.77 = 351.54/x
  3. Step 3: Cross multiply
    936.27x = 1,404.77 × 351.54
  4. Step 4: Simplify right side
    936.27x = 493,831.09
  5. Step 5: Solve for x
    x = 493,831.09/936.27
  6. Step 6: Final answer
    x = 527.45

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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.