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Finding the Fourth Proportional to 555.56, 831.72 and 323.73

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Solution

The fourth proportional to 555.56, 831.72 and 323.73 is: 484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.56 : 831.72 = 323.73 : x
  2. Step 2: Convert to fraction form
    555.56/831.72 = 323.73/x
  3. Step 3: Cross multiply
    555.56x = 831.72 × 323.73
  4. Step 4: Simplify right side
    555.56x = 269,252.72
  5. Step 5: Solve for x
    x = 269,252.72/555.56
  6. Step 6: Final answer
    x = 484.66

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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.