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Finding the Fourth Proportional to 509.41, 763.49 and 406.27

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Solution

The fourth proportional to 509.41, 763.49 and 406.27 is: 608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.41 : 763.49 = 406.27 : x
  2. Step 2: Convert to fraction form
    509.41/763.49 = 406.27/x
  3. Step 3: Cross multiply
    509.41x = 763.49 × 406.27
  4. Step 4: Simplify right side
    509.41x = 310,185.05
  5. Step 5: Solve for x
    x = 310,185.05/509.41
  6. Step 6: Final answer
    x = 608.91

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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.