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Finding the Fourth Proportional to 555.36, 833.08 and 281.20

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Solution

The fourth proportional to 555.36, 833.08 and 281.20 is: 421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.36 : 833.08 = 281.20 : x
  2. Step 2: Convert to fraction form
    555.36/833.08 = 281.20/x
  3. Step 3: Cross multiply
    555.36x = 833.08 × 281.20
  4. Step 4: Simplify right side
    555.36x = 234,262.10
  5. Step 5: Solve for x
    x = 234,262.10/555.36
  6. Step 6: Final answer
    x = 421.82

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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.