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Finding the Fourth Proportional to 376.45, 519.21 and 252.07

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Solution

The fourth proportional to 376.45, 519.21 and 252.07 is: 347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.45 : 519.21 = 252.07 : x
  2. Step 2: Convert to fraction form
    376.45/519.21 = 252.07/x
  3. Step 3: Cross multiply
    376.45x = 519.21 × 252.07
  4. Step 4: Simplify right side
    376.45x = 130,877.26
  5. Step 5: Solve for x
    x = 130,877.26/376.45
  6. Step 6: Final answer
    x = 347.66

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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.