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Finding the Fourth Proportional to 344.63, 516.95 and 149.47

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Solution

The fourth proportional to 344.63, 516.95 and 149.47 is: 224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.63 : 516.95 = 149.47 : x
  2. Step 2: Convert to fraction form
    344.63/516.95 = 149.47/x
  3. Step 3: Cross multiply
    344.63x = 516.95 × 149.47
  4. Step 4: Simplify right side
    344.63x = 77,267.77
  5. Step 5: Solve for x
    x = 77,267.77/344.63
  6. Step 6: Final answer
    x = 224.21

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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.