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Finding the Fourth Proportional to 389, 582.54 and 375.03

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Solution

The fourth proportional to 389, 582.54 and 375.03 is: 561.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389 : 582.54 = 375.03 : x
  2. Step 2: Convert to fraction form
    389/582.54 = 375.03/x
  3. Step 3: Cross multiply
    389x = 582.54 × 375.03
  4. Step 4: Simplify right side
    389x = 218,469.98
  5. Step 5: Solve for x
    x = 218,469.98/389
  6. Step 6: Final answer
    x = 561.62

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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.