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Finding the Fourth Proportional to 555.07, 831.32 and 276.92

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Solution

The fourth proportional to 555.07, 831.32 and 276.92 is: 414.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.07 : 831.32 = 276.92 : x
  2. Step 2: Convert to fraction form
    555.07/831.32 = 276.92/x
  3. Step 3: Cross multiply
    555.07x = 831.32 × 276.92
  4. Step 4: Simplify right side
    555.07x = 230,209.13
  5. Step 5: Solve for x
    x = 230,209.13/555.07
  6. Step 6: Final answer
    x = 414.74

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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.