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Finding the Fourth Proportional to 375.29, 518.07 and 235.61

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Solution

The fourth proportional to 375.29, 518.07 and 235.61 is: 325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.29 : 518.07 = 235.61 : x
  2. Step 2: Convert to fraction form
    375.29/518.07 = 235.61/x
  3. Step 3: Cross multiply
    375.29x = 518.07 × 235.61
  4. Step 4: Simplify right side
    375.29x = 122,062.47
  5. Step 5: Solve for x
    x = 122,062.47/375.29
  6. Step 6: Final answer
    x = 325.25

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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.