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Finding the Fourth Proportional to 778.23, 1,167 and 251.01

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Solution

The fourth proportional to 778.23, 1,167 and 251.01 is: 376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    778.23 : 1,167 = 251.01 : x
  2. Step 2: Convert to fraction form
    778.23/1,167 = 251.01/x
  3. Step 3: Cross multiply
    778.23x = 1,167 × 251.01
  4. Step 4: Simplify right side
    778.23x = 292,928.67
  5. Step 5: Solve for x
    x = 292,928.67/778.23
  6. Step 6: Final answer
    x = 376.40

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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.