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Finding the Fourth Proportional to 149.98, 206.93 and 103.26

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Solution

The fourth proportional to 149.98, 206.93 and 103.26 is: 142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.98 : 206.93 = 103.26 : x
  2. Step 2: Convert to fraction form
    149.98/206.93 = 103.26/x
  3. Step 3: Cross multiply
    149.98x = 206.93 × 103.26
  4. Step 4: Simplify right side
    149.98x = 21,367.59
  5. Step 5: Solve for x
    x = 21,367.59/149.98
  6. Step 6: Final answer
    x = 142.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.