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Finding the Fourth Proportional to 154.37, 213.02 and 92.19

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Solution

The fourth proportional to 154.37, 213.02 and 92.19 is: 127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.37 : 213.02 = 92.19 : x
  2. Step 2: Convert to fraction form
    154.37/213.02 = 92.19/x
  3. Step 3: Cross multiply
    154.37x = 213.02 × 92.19
  4. Step 4: Simplify right side
    154.37x = 19,637.80
  5. Step 5: Solve for x
    x = 19,637.80/154.37
  6. Step 6: Final answer
    x = 127.21

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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.