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Finding the Fourth Proportional to 339.84, 508.68 and 231.03

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Solution

The fourth proportional to 339.84, 508.68 and 231.03 is: 345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.84 : 508.68 = 231.03 : x
  2. Step 2: Convert to fraction form
    339.84/508.68 = 231.03/x
  3. Step 3: Cross multiply
    339.84x = 508.68 × 231.03
  4. Step 4: Simplify right side
    339.84x = 117,520.34
  5. Step 5: Solve for x
    x = 117,520.34/339.84
  6. Step 6: Final answer
    x = 345.81

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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.