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Finding the Fourth Proportional to 192.55, 266.07 and 137.19

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Solution

The fourth proportional to 192.55, 266.07 and 137.19 is: 189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.55 : 266.07 = 137.19 : x
  2. Step 2: Convert to fraction form
    192.55/266.07 = 137.19/x
  3. Step 3: Cross multiply
    192.55x = 266.07 × 137.19
  4. Step 4: Simplify right side
    192.55x = 36,503.46
  5. Step 5: Solve for x
    x = 36,503.46/192.55
  6. Step 6: Final answer
    x = 189.58

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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.