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Finding the Fourth Proportional to 383.90, 573.05 and 351.44

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Solution

The fourth proportional to 383.90, 573.05 and 351.44 is: 524.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.90 : 573.05 = 351.44 : x
  2. Step 2: Convert to fraction form
    383.90/573.05 = 351.44/x
  3. Step 3: Cross multiply
    383.90x = 573.05 × 351.44
  4. Step 4: Simplify right side
    383.90x = 201,388.07
  5. Step 5: Solve for x
    x = 201,388.07/383.90
  6. Step 6: Final answer
    x = 524.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.