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Finding the Fourth Proportional to 375.99, 517.79 and 352.55

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Solution

The fourth proportional to 375.99, 517.79 and 352.55 is: 485.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.99 : 517.79 = 352.55 : x
  2. Step 2: Convert to fraction form
    375.99/517.79 = 352.55/x
  3. Step 3: Cross multiply
    375.99x = 517.79 × 352.55
  4. Step 4: Simplify right side
    375.99x = 182,549.04
  5. Step 5: Solve for x
    x = 182,549.04/375.99
  6. Step 6: Final answer
    x = 485.51

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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.