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Finding the Fourth Proportional to 137.25, 204.91 and 127.53

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Solution

The fourth proportional to 137.25, 204.91 and 127.53 is: 190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.25 : 204.91 = 127.53 : x
  2. Step 2: Convert to fraction form
    137.25/204.91 = 127.53/x
  3. Step 3: Cross multiply
    137.25x = 204.91 × 127.53
  4. Step 4: Simplify right side
    137.25x = 26,131.85
  5. Step 5: Solve for x
    x = 26,131.85/137.25
  6. Step 6: Final answer
    x = 190.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.