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Finding the Fourth Proportional to 555.12, 828.50 and 540.54

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Solution

The fourth proportional to 555.12, 828.50 and 540.54 is: 806.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.12 : 828.50 = 540.54 : x
  2. Step 2: Convert to fraction form
    555.12/828.50 = 540.54/x
  3. Step 3: Cross multiply
    555.12x = 828.50 × 540.54
  4. Step 4: Simplify right side
    555.12x = 447,834.69
  5. Step 5: Solve for x
    x = 447,834.69/555.12
  6. Step 6: Final answer
    x = 806.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.