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Finding the Fourth Proportional to 340.14, 509.81 and 134.60

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Solution

The fourth proportional to 340.14, 509.81 and 134.60 is: 201.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.14 : 509.81 = 134.60 : x
  2. Step 2: Convert to fraction form
    340.14/509.81 = 134.60/x
  3. Step 3: Cross multiply
    340.14x = 509.81 × 134.60
  4. Step 4: Simplify right side
    340.14x = 68,621.03
  5. Step 5: Solve for x
    x = 68,621.03/340.14
  6. Step 6: Final answer
    x = 201.74

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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.