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Finding the Fourth Proportional to 376.64, 519.60 and 266.12

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Solution

The fourth proportional to 376.64, 519.60 and 266.12 is: 367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.64 : 519.60 = 266.12 : x
  2. Step 2: Convert to fraction form
    376.64/519.60 = 266.12/x
  3. Step 3: Cross multiply
    376.64x = 519.60 × 266.12
  4. Step 4: Simplify right side
    376.64x = 138,275.95
  5. Step 5: Solve for x
    x = 138,275.95/376.64
  6. Step 6: Final answer
    x = 367.13

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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.