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Finding the Fourth Proportional to 509.64, 762.80 and 336.44

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Solution

The fourth proportional to 509.64, 762.80 and 336.44 is: 503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.64 : 762.80 = 336.44 : x
  2. Step 2: Convert to fraction form
    509.64/762.80 = 336.44/x
  3. Step 3: Cross multiply
    509.64x = 762.80 × 336.44
  4. Step 4: Simplify right side
    509.64x = 256,636.43
  5. Step 5: Solve for x
    x = 256,636.43/509.64
  6. Step 6: Final answer
    x = 503.56

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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.