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Finding the Fourth Proportional to 376.27, 519.21 and 210.45

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Solution

The fourth proportional to 376.27, 519.21 and 210.45 is: 290.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.27 : 519.21 = 210.45 : x
  2. Step 2: Convert to fraction form
    376.27/519.21 = 210.45/x
  3. Step 3: Cross multiply
    376.27x = 519.21 × 210.45
  4. Step 4: Simplify right side
    376.27x = 109,266.77
  5. Step 5: Solve for x
    x = 109,266.77/376.27
  6. Step 6: Final answer
    x = 290.39

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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.