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Finding the Fourth Proportional to 252.68, 376.15 and 251.31

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Solution

The fourth proportional to 252.68, 376.15 and 251.31 is: 374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.68 : 376.15 = 251.31 : x
  2. Step 2: Convert to fraction form
    252.68/376.15 = 251.31/x
  3. Step 3: Cross multiply
    252.68x = 376.15 × 251.31
  4. Step 4: Simplify right side
    252.68x = 94,529.00
  5. Step 5: Solve for x
    x = 94,529.00/252.68
  6. Step 6: Final answer
    x = 374.11

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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.