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Finding the Fourth Proportional to 555.64, 831.30 and 500.92

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Solution

The fourth proportional to 555.64, 831.30 and 500.92 is: 749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.64 : 831.30 = 500.92 : x
  2. Step 2: Convert to fraction form
    555.64/831.30 = 500.92/x
  3. Step 3: Cross multiply
    555.64x = 831.30 × 500.92
  4. Step 4: Simplify right side
    555.64x = 416,414.80
  5. Step 5: Solve for x
    x = 416,414.80/555.64
  6. Step 6: Final answer
    x = 749.43

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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.