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Finding the Fourth Proportional to 514.73, 771.95 and 149.42

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Solution

The fourth proportional to 514.73, 771.95 and 149.42 is: 224.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.73 : 771.95 = 149.42 : x
  2. Step 2: Convert to fraction form
    514.73/771.95 = 149.42/x
  3. Step 3: Cross multiply
    514.73x = 771.95 × 149.42
  4. Step 4: Simplify right side
    514.73x = 115,340.16
  5. Step 5: Solve for x
    x = 115,340.16/514.73
  6. Step 6: Final answer
    x = 224.08

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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.