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Finding the Fourth Proportional to 254.65, 379.30 and 251.50

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Solution

The fourth proportional to 254.65, 379.30 and 251.50 is: 374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.65 : 379.30 = 251.50 : x
  2. Step 2: Convert to fraction form
    254.65/379.30 = 251.50/x
  3. Step 3: Cross multiply
    254.65x = 379.30 × 251.50
  4. Step 4: Simplify right side
    254.65x = 95,393.95
  5. Step 5: Solve for x
    x = 95,393.95/254.65
  6. Step 6: Final answer
    x = 374.61

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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.