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Finding the Fourth Proportional to 555.76, 831.90 and 324.04

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Solution

The fourth proportional to 555.76, 831.90 and 324.04 is: 485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.76 : 831.90 = 324.04 : x
  2. Step 2: Convert to fraction form
    555.76/831.90 = 324.04/x
  3. Step 3: Cross multiply
    555.76x = 831.90 × 324.04
  4. Step 4: Simplify right side
    555.76x = 269,568.88
  5. Step 5: Solve for x
    x = 269,568.88/555.76
  6. Step 6: Final answer
    x = 485.05

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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.