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Finding the Fourth Proportional to 339.50, 508.44 and 299.54

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Solution

The fourth proportional to 339.50, 508.44 and 299.54 is: 448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.50 : 508.44 = 299.54 : x
  2. Step 2: Convert to fraction form
    339.50/508.44 = 299.54/x
  3. Step 3: Cross multiply
    339.50x = 508.44 × 299.54
  4. Step 4: Simplify right side
    339.50x = 152,298.12
  5. Step 5: Solve for x
    x = 152,298.12/339.50
  6. Step 6: Final answer
    x = 448.60

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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.