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Finding the Fourth Proportional to 339.96, 509.93 and 134.66

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Solution

The fourth proportional to 339.96, 509.93 and 134.66 is: 201.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.96 : 509.93 = 134.66 : x
  2. Step 2: Convert to fraction form
    339.96/509.93 = 134.66/x
  3. Step 3: Cross multiply
    339.96x = 509.93 × 134.66
  4. Step 4: Simplify right side
    339.96x = 68,668.28
  5. Step 5: Solve for x
    x = 68,668.28/339.96
  6. Step 6: Final answer
    x = 201.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.