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Finding the Fourth Proportional to 514.95, 771.95 and 168.07

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Solution

The fourth proportional to 514.95, 771.95 and 168.07 is: 251.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.95 : 771.95 = 168.07 : x
  2. Step 2: Convert to fraction form
    514.95/771.95 = 168.07/x
  3. Step 3: Cross multiply
    514.95x = 771.95 × 168.07
  4. Step 4: Simplify right side
    514.95x = 129,736.94
  5. Step 5: Solve for x
    x = 129,736.94/514.95
  6. Step 6: Final answer
    x = 251.94

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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.