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Finding the Fourth Proportional to 336.84, 505.60 and 239.45

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Solution

The fourth proportional to 336.84, 505.60 and 239.45 is: 359.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.84 : 505.60 = 239.45 : x
  2. Step 2: Convert to fraction form
    336.84/505.60 = 239.45/x
  3. Step 3: Cross multiply
    336.84x = 505.60 × 239.45
  4. Step 4: Simplify right side
    336.84x = 121,065.92
  5. Step 5: Solve for x
    x = 121,065.92/336.84
  6. Step 6: Final answer
    x = 359.42

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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.