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Finding the Fourth Proportional to 611.44, 844.24 and 425.20

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Solution

The fourth proportional to 611.44, 844.24 and 425.20 is: 587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.44 : 844.24 = 425.20 : x
  2. Step 2: Convert to fraction form
    611.44/844.24 = 425.20/x
  3. Step 3: Cross multiply
    611.44x = 844.24 × 425.20
  4. Step 4: Simplify right side
    611.44x = 358,970.85
  5. Step 5: Solve for x
    x = 358,970.85/611.44
  6. Step 6: Final answer
    x = 587.09

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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.