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Finding the Fourth Proportional to 611.86, 844.70 and 423.03

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Solution

The fourth proportional to 611.86, 844.70 and 423.03 is: 584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.86 : 844.70 = 423.03 : x
  2. Step 2: Convert to fraction form
    611.86/844.70 = 423.03/x
  3. Step 3: Cross multiply
    611.86x = 844.70 × 423.03
  4. Step 4: Simplify right side
    611.86x = 357,333.44
  5. Step 5: Solve for x
    x = 357,333.44/611.86
  6. Step 6: Final answer
    x = 584.01

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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.