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Finding the Fourth Proportional to 251.18, 376.41 and 165.50

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Solution

The fourth proportional to 251.18, 376.41 and 165.50 is: 248.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.18 : 376.41 = 165.50 : x
  2. Step 2: Convert to fraction form
    251.18/376.41 = 165.50/x
  3. Step 3: Cross multiply
    251.18x = 376.41 × 165.50
  4. Step 4: Simplify right side
    251.18x = 62,295.86
  5. Step 5: Solve for x
    x = 62,295.86/251.18
  6. Step 6: Final answer
    x = 248.01

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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.