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Finding the Fourth Proportional to 509.63, 764.19 and 249.52

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Solution

The fourth proportional to 509.63, 764.19 and 249.52 is: 374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.63 : 764.19 = 249.52 : x
  2. Step 2: Convert to fraction form
    509.63/764.19 = 249.52/x
  3. Step 3: Cross multiply
    509.63x = 764.19 × 249.52
  4. Step 4: Simplify right side
    509.63x = 190,675.62
  5. Step 5: Solve for x
    x = 190,675.62/509.63
  6. Step 6: Final answer
    x = 374.15

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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.