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Finding the Fourth Proportional to 555.73, 833.28 and 281.68

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Solution

The fourth proportional to 555.73, 833.28 and 281.68 is: 422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.73 : 833.28 = 281.68 : x
  2. Step 2: Convert to fraction form
    555.73/833.28 = 281.68/x
  3. Step 3: Cross multiply
    555.73x = 833.28 × 281.68
  4. Step 4: Simplify right side
    555.73x = 234,718.31
  5. Step 5: Solve for x
    x = 234,718.31/555.73
  6. Step 6: Final answer
    x = 422.36

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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.