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Finding the Fourth Proportional to 584.44, 805.60 and 397.88

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Solution

The fourth proportional to 584.44, 805.60 and 397.88 is: 548.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.44 : 805.60 = 397.88 : x
  2. Step 2: Convert to fraction form
    584.44/805.60 = 397.88/x
  3. Step 3: Cross multiply
    584.44x = 805.60 × 397.88
  4. Step 4: Simplify right side
    584.44x = 320,532.13
  5. Step 5: Solve for x
    x = 320,532.13/584.44
  6. Step 6: Final answer
    x = 548.44

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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.