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Finding the Fourth Proportional to 574.28, 864.54 and 523.26

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Solution

The fourth proportional to 574.28, 864.54 and 523.26 is: 787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.28 : 864.54 = 523.26 : x
  2. Step 2: Convert to fraction form
    574.28/864.54 = 523.26/x
  3. Step 3: Cross multiply
    574.28x = 864.54 × 523.26
  4. Step 4: Simplify right side
    574.28x = 452,379.20
  5. Step 5: Solve for x
    x = 452,379.20/574.28
  6. Step 6: Final answer
    x = 787.73

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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.