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Finding the Fourth Proportional to 547.26, 755.85 and 494.79

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Solution

The fourth proportional to 547.26, 755.85 and 494.79 is: 683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.26 : 755.85 = 494.79 : x
  2. Step 2: Convert to fraction form
    547.26/755.85 = 494.79/x
  3. Step 3: Cross multiply
    547.26x = 755.85 × 494.79
  4. Step 4: Simplify right side
    547.26x = 373,987.02
  5. Step 5: Solve for x
    x = 373,987.02/547.26
  6. Step 6: Final answer
    x = 683.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.