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Finding the Fourth Proportional to 375.66, 518.65 and 235.91

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Solution

The fourth proportional to 375.66, 518.65 and 235.91 is: 325.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.66 : 518.65 = 235.91 : x
  2. Step 2: Convert to fraction form
    375.66/518.65 = 235.91/x
  3. Step 3: Cross multiply
    375.66x = 518.65 × 235.91
  4. Step 4: Simplify right side
    375.66x = 122,355.43
  5. Step 5: Solve for x
    x = 122,355.43/375.66
  6. Step 6: Final answer
    x = 325.71

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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.