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Finding the Fourth Proportional to 514.38, 771.23 and 349.90

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Solution

The fourth proportional to 514.38, 771.23 and 349.90 is: 524.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.38 : 771.23 = 349.90 : x
  2. Step 2: Convert to fraction form
    514.38/771.23 = 349.90/x
  3. Step 3: Cross multiply
    514.38x = 771.23 × 349.90
  4. Step 4: Simplify right side
    514.38x = 269,851.63
  5. Step 5: Solve for x
    x = 269,851.63/514.38
  6. Step 6: Final answer
    x = 524.62

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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.