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Finding the Fourth Proportional to 336.52, 503.70 and 239.20

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Solution

The fourth proportional to 336.52, 503.70 and 239.20 is: 358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.52 : 503.70 = 239.20 : x
  2. Step 2: Convert to fraction form
    336.52/503.70 = 239.20/x
  3. Step 3: Cross multiply
    336.52x = 503.70 × 239.20
  4. Step 4: Simplify right side
    336.52x = 120,485.04
  5. Step 5: Solve for x
    x = 120,485.04/336.52
  6. Step 6: Final answer
    x = 358.03

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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.