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Finding the Fourth Proportional to 375.88, 518.66 and 210.08

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Solution

The fourth proportional to 375.88, 518.66 and 210.08 is: 289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.88 : 518.66 = 210.08 : x
  2. Step 2: Convert to fraction form
    375.88/518.66 = 210.08/x
  3. Step 3: Cross multiply
    375.88x = 518.66 × 210.08
  4. Step 4: Simplify right side
    375.88x = 108,960.09
  5. Step 5: Solve for x
    x = 108,960.09/375.88
  6. Step 6: Final answer
    x = 289.88

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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.