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Finding the Fourth Proportional to 336.21, 503.82 and 259.20

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Solution

The fourth proportional to 336.21, 503.82 and 259.20 is: 388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.21 : 503.82 = 259.20 : x
  2. Step 2: Convert to fraction form
    336.21/503.82 = 259.20/x
  3. Step 3: Cross multiply
    336.21x = 503.82 × 259.20
  4. Step 4: Simplify right side
    336.21x = 130,590.14
  5. Step 5: Solve for x
    x = 130,590.14/336.21
  6. Step 6: Final answer
    x = 388.42

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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.