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Finding the Fourth Proportional to 376.19, 518.87 and 251.64

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Solution

The fourth proportional to 376.19, 518.87 and 251.64 is: 347.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.19 : 518.87 = 251.64 : x
  2. Step 2: Convert to fraction form
    376.19/518.87 = 251.64/x
  3. Step 3: Cross multiply
    376.19x = 518.87 × 251.64
  4. Step 4: Simplify right side
    376.19x = 130,565.22
  5. Step 5: Solve for x
    x = 130,565.22/376.19
  6. Step 6: Final answer
    x = 347.07

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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.