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Finding the Fourth Proportional to 339.54, 508.59 and 299.45

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Solution

The fourth proportional to 339.54, 508.59 and 299.45 is: 448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.54 : 508.59 = 299.45 : x
  2. Step 2: Convert to fraction form
    339.54/508.59 = 299.45/x
  3. Step 3: Cross multiply
    339.54x = 508.59 × 299.45
  4. Step 4: Simplify right side
    339.54x = 152,294.73
  5. Step 5: Solve for x
    x = 152,294.73/339.54
  6. Step 6: Final answer
    x = 448.53

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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.