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Finding the Fourth Proportional to 376.44, 519.72 and 258.61

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Solution

The fourth proportional to 376.44, 519.72 and 258.61 is: 357.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.44 : 519.72 = 258.61 : x
  2. Step 2: Convert to fraction form
    376.44/519.72 = 258.61/x
  3. Step 3: Cross multiply
    376.44x = 519.72 × 258.61
  4. Step 4: Simplify right side
    376.44x = 134,402.19
  5. Step 5: Solve for x
    x = 134,402.19/376.44
  6. Step 6: Final answer
    x = 357.03

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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.