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Finding the Fourth Proportional to 254.94, 379.63 and 245.72

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Solution

The fourth proportional to 254.94, 379.63 and 245.72 is: 365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.94 : 379.63 = 245.72 : x
  2. Step 2: Convert to fraction form
    254.94/379.63 = 245.72/x
  3. Step 3: Cross multiply
    254.94x = 379.63 × 245.72
  4. Step 4: Simplify right side
    254.94x = 93,282.68
  5. Step 5: Solve for x
    x = 93,282.68/254.94
  6. Step 6: Final answer
    x = 365.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.