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Finding the Fourth Proportional to 383.43, 572.35 and 351.03

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Solution

The fourth proportional to 383.43, 572.35 and 351.03 is: 523.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.43 : 572.35 = 351.03 : x
  2. Step 2: Convert to fraction form
    383.43/572.35 = 351.03/x
  3. Step 3: Cross multiply
    383.43x = 572.35 × 351.03
  4. Step 4: Simplify right side
    383.43x = 200,911.14
  5. Step 5: Solve for x
    x = 200,911.14/383.43
  6. Step 6: Final answer
    x = 523.98

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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.