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Finding the Fourth Proportional to 281.46, 388.72 and 250.92

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Solution

The fourth proportional to 281.46, 388.72 and 250.92 is: 346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.46 : 388.72 = 250.92 : x
  2. Step 2: Convert to fraction form
    281.46/388.72 = 250.92/x
  3. Step 3: Cross multiply
    281.46x = 388.72 × 250.92
  4. Step 4: Simplify right side
    281.46x = 97,536.37
  5. Step 5: Solve for x
    x = 97,536.37/281.46
  6. Step 6: Final answer
    x = 346.54

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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.