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Finding the Fourth Proportional to 339.71, 509.58 and 193.37

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Solution

The fourth proportional to 339.71, 509.58 and 193.37 is: 290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.71 : 509.58 = 193.37 : x
  2. Step 2: Convert to fraction form
    339.71/509.58 = 193.37/x
  3. Step 3: Cross multiply
    339.71x = 509.58 × 193.37
  4. Step 4: Simplify right side
    339.71x = 98,537.48
  5. Step 5: Solve for x
    x = 98,537.48/339.71
  6. Step 6: Final answer
    x = 290.06

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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.