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Finding the Fourth Proportional to 626.91, 940.62 and 383.61

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Solution

The fourth proportional to 626.91, 940.62 and 383.61 is: 575.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.91 : 940.62 = 383.61 : x
  2. Step 2: Convert to fraction form
    626.91/940.62 = 383.61/x
  3. Step 3: Cross multiply
    626.91x = 940.62 × 383.61
  4. Step 4: Simplify right side
    626.91x = 360,831.24
  5. Step 5: Solve for x
    x = 360,831.24/626.91
  6. Step 6: Final answer
    x = 575.57

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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.