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Finding the Fourth Proportional to 251.71, 377.73 and 114.75

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Solution

The fourth proportional to 251.71, 377.73 and 114.75 is: 172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.71 : 377.73 = 114.75 : x
  2. Step 2: Convert to fraction form
    251.71/377.73 = 114.75/x
  3. Step 3: Cross multiply
    251.71x = 377.73 × 114.75
  4. Step 4: Simplify right side
    251.71x = 43,345.63
  5. Step 5: Solve for x
    x = 43,345.63/251.71
  6. Step 6: Final answer
    x = 172.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.