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Finding the Fourth Proportional to 375.45, 518.10 and 207.39

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Solution

The fourth proportional to 375.45, 518.10 and 207.39 is: 286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.45 : 518.10 = 207.39 : x
  2. Step 2: Convert to fraction form
    375.45/518.10 = 207.39/x
  3. Step 3: Cross multiply
    375.45x = 518.10 × 207.39
  4. Step 4: Simplify right side
    375.45x = 107,448.76
  5. Step 5: Solve for x
    x = 107,448.76/375.45
  6. Step 6: Final answer
    x = 286.19

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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.