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Finding the Fourth Proportional to 375.39, 518.60 and 372.51

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Solution

The fourth proportional to 375.39, 518.60 and 372.51 is: 514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.39 : 518.60 = 372.51 : x
  2. Step 2: Convert to fraction form
    375.39/518.60 = 372.51/x
  3. Step 3: Cross multiply
    375.39x = 518.60 × 372.51
  4. Step 4: Simplify right side
    375.39x = 193,181.82
  5. Step 5: Solve for x
    x = 193,181.82/375.39
  6. Step 6: Final answer
    x = 514.62

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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.