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Finding the Fourth Proportional to 376.76, 519.95 and 210.98

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Solution

The fourth proportional to 376.76, 519.95 and 210.98 is: 291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.76 : 519.95 = 210.98 : x
  2. Step 2: Convert to fraction form
    376.76/519.95 = 210.98/x
  3. Step 3: Cross multiply
    376.76x = 519.95 × 210.98
  4. Step 4: Simplify right side
    376.76x = 109,700.88
  5. Step 5: Solve for x
    x = 109,700.88/376.76
  6. Step 6: Final answer
    x = 291.17

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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.