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Finding the Fourth Proportional to 375.97, 518.91 and 228.57

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Solution

The fourth proportional to 375.97, 518.91 and 228.57 is: 315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.97 : 518.91 = 228.57 : x
  2. Step 2: Convert to fraction form
    375.97/518.91 = 228.57/x
  3. Step 3: Cross multiply
    375.97x = 518.91 × 228.57
  4. Step 4: Simplify right side
    375.97x = 118,607.26
  5. Step 5: Solve for x
    x = 118,607.26/375.97
  6. Step 6: Final answer
    x = 315.47

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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.