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Finding the Fourth Proportional to 547.23, 817.24 and 486.75

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Solution

The fourth proportional to 547.23, 817.24 and 486.75 is: 726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.23 : 817.24 = 486.75 : x
  2. Step 2: Convert to fraction form
    547.23/817.24 = 486.75/x
  3. Step 3: Cross multiply
    547.23x = 817.24 × 486.75
  4. Step 4: Simplify right side
    547.23x = 397,790.35
  5. Step 5: Solve for x
    x = 397,790.35/547.23
  6. Step 6: Final answer
    x = 726.92

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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.