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Finding the Fourth Proportional to 375.88, 518.71 and 207.84

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Solution

The fourth proportional to 375.88, 518.71 and 207.84 is: 286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.88 : 518.71 = 207.84 : x
  2. Step 2: Convert to fraction form
    375.88/518.71 = 207.84/x
  3. Step 3: Cross multiply
    375.88x = 518.71 × 207.84
  4. Step 4: Simplify right side
    375.88x = 107,809.85
  5. Step 5: Solve for x
    x = 107,809.85/375.88
  6. Step 6: Final answer
    x = 286.82

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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.