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Finding the Fourth Proportional to 251.34, 376.91 and 104.99

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Solution

The fourth proportional to 251.34, 376.91 and 104.99 is: 157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.34 : 376.91 = 104.99 : x
  2. Step 2: Convert to fraction form
    251.34/376.91 = 104.99/x
  3. Step 3: Cross multiply
    251.34x = 376.91 × 104.99
  4. Step 4: Simplify right side
    251.34x = 39,572.20
  5. Step 5: Solve for x
    x = 39,572.20/251.34
  6. Step 6: Final answer
    x = 157.45

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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.