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Finding the Fourth Proportional to 376.55, 520.00 and 245.63

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Solution

The fourth proportional to 376.55, 520.00 and 245.63 is: 339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.55 : 520.00 = 245.63 : x
  2. Step 2: Convert to fraction form
    376.55/520.00 = 245.63/x
  3. Step 3: Cross multiply
    376.55x = 520.00 × 245.63
  4. Step 4: Simplify right side
    376.55x = 127,724.39
  5. Step 5: Solve for x
    x = 127,724.39/376.55
  6. Step 6: Final answer
    x = 339.20

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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.