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Finding the Fourth Proportional to 555.06, 835.91 and 483.78

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Solution

The fourth proportional to 555.06, 835.91 and 483.78 is: 728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.06 : 835.91 = 483.78 : x
  2. Step 2: Convert to fraction form
    555.06/835.91 = 483.78/x
  3. Step 3: Cross multiply
    555.06x = 835.91 × 483.78
  4. Step 4: Simplify right side
    555.06x = 404,394.12
  5. Step 5: Solve for x
    x = 404,394.12/555.06
  6. Step 6: Final answer
    x = 728.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.