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Finding the Fourth Proportional to 514.72, 771.44 and 406.08

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Solution

The fourth proportional to 514.72, 771.44 and 406.08 is: 608.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.72 : 771.44 = 406.08 : x
  2. Step 2: Convert to fraction form
    514.72/771.44 = 406.08/x
  3. Step 3: Cross multiply
    514.72x = 771.44 × 406.08
  4. Step 4: Simplify right side
    514.72x = 313,266.36
  5. Step 5: Solve for x
    x = 313,266.36/514.72
  6. Step 6: Final answer
    x = 608.62

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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.