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Finding the Fourth Proportional to 344.47, 516.50 and 135.99

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Solution

The fourth proportional to 344.47, 516.50 and 135.99 is: 203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.47 : 516.50 = 135.99 : x
  2. Step 2: Convert to fraction form
    344.47/516.50 = 135.99/x
  3. Step 3: Cross multiply
    344.47x = 516.50 × 135.99
  4. Step 4: Simplify right side
    344.47x = 70,238.84
  5. Step 5: Solve for x
    x = 70,238.84/344.47
  6. Step 6: Final answer
    x = 203.90

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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.