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Finding the Fourth Proportional to 339.74, 508.81 and 200.54

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Solution

The fourth proportional to 339.74, 508.81 and 200.54 is: 300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.74 : 508.81 = 200.54 : x
  2. Step 2: Convert to fraction form
    339.74/508.81 = 200.54/x
  3. Step 3: Cross multiply
    339.74x = 508.81 × 200.54
  4. Step 4: Simplify right side
    339.74x = 102,036.76
  5. Step 5: Solve for x
    x = 102,036.76/339.74
  6. Step 6: Final answer
    x = 300.34

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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.