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Finding the Fourth Proportional to 579.27, 867.07 and 457.77

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Solution

The fourth proportional to 579.27, 867.07 and 457.77 is: 685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.27 : 867.07 = 457.77 : x
  2. Step 2: Convert to fraction form
    579.27/867.07 = 457.77/x
  3. Step 3: Cross multiply
    579.27x = 867.07 × 457.77
  4. Step 4: Simplify right side
    579.27x = 396,918.63
  5. Step 5: Solve for x
    x = 396,918.63/579.27
  6. Step 6: Final answer
    x = 685.20

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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.