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Finding the Fourth Proportional to 589.84, 886.44 and 398.80

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Solution

The fourth proportional to 589.84, 886.44 and 398.80 is: 599.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.84 : 886.44 = 398.80 : x
  2. Step 2: Convert to fraction form
    589.84/886.44 = 398.80/x
  3. Step 3: Cross multiply
    589.84x = 886.44 × 398.80
  4. Step 4: Simplify right side
    589.84x = 353,512.27
  5. Step 5: Solve for x
    x = 353,512.27/589.84
  6. Step 6: Final answer
    x = 599.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.