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Finding the Fourth Proportional to 375.45, 517.95 and 235.50

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Solution

The fourth proportional to 375.45, 517.95 and 235.50 is: 324.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.45 : 517.95 = 235.50 : x
  2. Step 2: Convert to fraction form
    375.45/517.95 = 235.50/x
  3. Step 3: Cross multiply
    375.45x = 517.95 × 235.50
  4. Step 4: Simplify right side
    375.45x = 121,976.05
  5. Step 5: Solve for x
    x = 121,976.05/375.45
  6. Step 6: Final answer
    x = 324.88

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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.