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Finding the Fourth Proportional to 514.63, 771.83 and 149.34

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Solution

The fourth proportional to 514.63, 771.83 and 149.34 is: 223.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.63 : 771.83 = 149.34 : x
  2. Step 2: Convert to fraction form
    514.63/771.83 = 149.34/x
  3. Step 3: Cross multiply
    514.63x = 771.83 × 149.34
  4. Step 4: Simplify right side
    514.63x = 115,264.35
  5. Step 5: Solve for x
    x = 115,264.35/514.63
  6. Step 6: Final answer
    x = 223.98

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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.